NCBI Conserved Domain Search

C2 domain second repeat present in Synaptotagmin-like proteins 1-4; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. Slp1/JFC1 and Slp2/exophilin 4 promote granule docking to the plasma membrane. Additionally, their C2A domains are both Ca2+ independent, unlike the case in Slp3 and Slp4/granuphilin in which their C2A domains are Ca2+ dependent. It is thought that SHD (except for the Slp4-SHD) functions as a specific Rab27A/B-binding domain. In addition to Slps, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. It has been demonstrated that Slp3 and Slp4/granuphilin promote dense-core vesicle exocytosis. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 175987 [Multi-domain] Cd Length: 162 Bit Score: 293.46 E-value: 2.37e-96

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 496 KGELVVSLKYIPASKTPvggdRKKSKGGEGGELQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRNKASKRKTPVMKKTLN 575
Cdd:cd04020     1 RGELKVALKYVPPESEG----ALKSKKPSTGELHVWVKEAKNLPALKSGGTSDSFVKCYLLPDKSKKSKQKTPVVKKSVN 76

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 576 PHYNHTFVYNGVRLEDLQHMCLELTVWDREPLASNDFLGGVRLGVGTGISNGEVVDWMDSTGEEVSLWQKMRQYPGSWAE 655
Cdd:cd04020    77 PVWNHTFVYDGVSPEDLSQACLELTVWDHDKLSSNDFLGGVRLGLGTGKSYGQAVDWMDSTGEEILLWQKMLDNPNSWVE 156


                  ....*.
gi 1631733364 656 GTLQLR 661
Cdd:cd04020   157 GTLPLR 162

C2 domain first repeat present in Synaptotagmin-like proteins 4 and 5; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. SHD of Slp (except for the Slp4-SHD) function as a specific Rab27A/B-binding domain. In addition to Slp, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. It has been demonstrated that Slp4/granuphilin promotes dense-core vesicle exocytosis. The C2A domain of Slp4 is Ca2+ dependent. Slp5 mRNA has been shown to be restricted to human placenta and liver suggesting a role in Rab27A-dependent membrane trafficking in specific tissues. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 175995 [Multi-domain] Cd Length: 125 Bit Score: 252.36 E-value: 4.71e-81

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 357 TGRIAFSLKYEQQTQSLVVHVKECHQLAYADEAKKRSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYEIPESL 436
Cdd:cd04029     1 SGEILFSLSYDYKTQSLNVHVKECRNLAYGDEAKKRSNPYVKTYLLPDKSRQSKRKTSIKRNTTNPVYNETLKYSISHSQ 80

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*
gi 1631733364 437 LAQRTLQFSVWHHGRFGRNTFLGEAEIQMDSWKLDKKLDHCLPLH 481
Cdd:cd04029    81 LETRTLQLSVWHYDRFGRNTFLGEVEIPLDSWNFDSQHEECLPLH 125

C2 domain first repeat present in Synaptotagmin-like proteins; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. Slp1/JFC1 and Slp2/exophilin 4 promote granule docking to the plasma membrane. Additionally, their C2A domains are both Ca2+ independent, unlike the case in Slp3 and Slp4/granuphilin in which their C2A domains are Ca2+ dependent. It is thought that SHD (except for the Slp4-SHD) functions as a specific Rab27A/B-binding domain. In addition to Slps, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. It has been demonstrated that Slp3 and Slp4/granuphilin promote dense-core vesicle exocytosis. Slp5 mRNA has been shown to be restricted to human placenta and liver suggesting a role in Rab27A-dependent membrane trafficking in specific tissues. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176056 [Multi-domain] Cd Length: 123 Bit Score: 227.91 E-value: 9.95e-72

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYEQQTQSLVVHVKECHQLAYADEAKKRSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYEIPESLL 437
Cdd:cd08521     1 GEIEFSLSYNYKTGSLEVHIKECRNLAYADEKKKRSNPYVKVYLLPDKSKQSKRKTSVKKNTTNPVFNETLKYHISKSQL 80

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|...
gi 1631733364 438 AQRTLQFSVWHHGRFGRNTFLGEAEIQMDSWKLDKKLDHCLPL 480
Cdd:cd08521    81 ETRTLQLSVWHHDRFGRNTFLGEVEIPLDSWDLDSQQSEWYPL 123

C2 domain first repeat present in Synaptotagmin-like proteins 1 and 2; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. Slp1/JFC1 and Slp2/exophilin 4 promote granule docking to the plasma membrane. Additionally, their C2A domains are both Ca2+ independent, unlike Slp3 and Slp4/granuphilin which are Ca2+ dependent. It is thought that SHD (except for the Slp4-SHD) functions as a specific Rab27A/B-binding domain. In addition to Slps, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176039 [Multi-domain] Cd Length: 125 Bit Score: 171.85 E-value: 1.29e-50

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYEQQTQSLVVHVKECHQLAYADEAKKRSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYEIPESLL 437
Cdd:cd08393     2 GSVQFALDYDPKLRELHVHVIQCQDLAAADPKKQRSDPYVKTYLLPDKSNRGKRKTSVKKKTLNPVFNETLRYKVEREEL 81

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|...
gi 1631733364 438 AQRTLQFSVWHHGRFGRNTFLGEAEIQMDSWKLDKKLDHCLPL 480
Cdd:cd08393    82 PTRVLNLSVWHRDSLGRNSFLGEVEVDLGSWDWSNTQPTWYPL 124

C2 domain first repeat present in Synaptotagmin-like protein 3; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. SHD of Slp (except for the Slp4-SHD) function as a specific Rab27A/B-binding domain. In addition to Slp, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. Little is known about the expression or localization of Slp3. The C2A domain of Slp3 is Ca2+ dependent. It has been demonstrated that Slp3 promotes dense-core vesicle exocytosis. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176038 [Multi-domain] Cd Length: 128 Bit Score: 133.03 E-value: 1.78e-36

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 357 TGRIAFSLKYEQQTQSLVVHVKECHQLAYADEAKKRSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYEIPESL 436
Cdd:cd08392     1 TGEIEFALHYNFRTSCLEITIKACRNLAYGDEKKKKCHPYVKVCLLPDKSHNSKRKTAVKKGTVNPVFNETLKYVVEADL 80

                          90       100       110
                  ....*....|....*....|....*....|....*..
gi 1631733364 437 LAQRTLQFSVWHHGRFGRNTFLGEAEIQMDSWKLDKK 473
Cdd:cd08392    81 LSSRQLQVSVWHSRTLKRRVFLGEVLIPLADWDFEDT 117

FYVE-related domain found in synaptotagmin-like protein 4 (Slp4) and similar proteins; Slp4, also termed exophilin-2, or granuphilin, has been characterized as a regulator of the release of insulin granules from pancreatic beta-cells and dense core granules from PC12 neuronal cells by binding to Rab27A , and amylase granules from parotid gland acinar cells through interaction with syntaxin-2/3 in a Munc18-2-dependent manner on the apical plasma membrane. It can binds to syntaxin 2 in parotid acinar cells. It is also involved in granule transport by recruitment of the motor protein myosin Va. Moreover, it requires Rab8 to increase granule release in platelets. Slp4 contains an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains. The Slp homology domain (SHD) consists of two conserved regions, designated SHD1 (Slp homology domain 1) and SHD2, which may function as protein interaction sites. The SHD1 and SHD2 of Slp4 are separated by a putative FYVE zinc finger, which resembles a FYVE-related domain that is structurally similar to the canonical FYVE domains but lacks the three signature sequences: an N-terminal WxxD motif (x for any residue), the central basic R(R/K)HHCRxCG patch, and a C-terminal RVC motif.

Pssm-ID: 277303 Cd Length: 50 Bit Score: 111.80 E-value: 6.42e-30

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|
gi 1631733364  58 YSDRTCARCQESLGRLSPKTNTCRGCNHLVCRDCRIQESNGTWRCKVCAK 107
Cdd:cd15764     1 YSERSCGRCQESLGRLSPKANQCRGCNHLVCRDCRAVRPNGSWVCSVCAK 50

C2 domain second repeat present in class II phosphatidylinositol 3-kinases (PI3Ks); There are 3 classes of PI3Ks based on structure, regulation, and specificity. All classes contain a N-terminal C2 domain, a PIK domain, and a kinase catalytic domain. Unlike class I and class III, class II PI3Ks have additionally a PX domain and a C-terminal C2 domain containing a nuclear localization signal both of which bind phospholipids though in a slightly different fashion. PI3Ks (AKA phosphatidylinositol (PtdIns) 3-kinases) regulate cell processes such as cell growth, differentiation, proliferation, and motility. PI3Ks work on phosphorylation of phosphatidylinositol, phosphatidylinositide (4)P (PtdIns (4)P),2 or PtdIns(4,5)P2. Specifically they phosphorylate the D3 hydroxyl group of phosphoinositol lipids on the inositol ring. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176027 [Multi-domain] Cd Length: 122 Bit Score: 101.22 E-value: 2.78e-25

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 357 TGRIAFSLKYEQQTQS-LVVHVKECHQLAYADeakkrSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYE-IPE 434
Cdd:cd08381     1 GGQVKLSISYKNGTLFvMVMHAKNLPLLDGSD-----PDPYVKTYLLPDPQKTTKRKTKVVRKTRNPTFNEMLVYDgLPV 75

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*.
gi 1631733364 435 SLLAQRTLQFSVWHHGRFGRNTFLGEAEIQMDSWKLDKKLDHCLPL 480
Cdd:cd08381    76 EDLQQRVLQVSVWSHDSLVENEFLGGVCIPLKKLDLSQETEKWYPL 121

C2 domain second repeat present in Rabphilin and Double C2 domain; Rabphilin is found neurons and in neuroendrocrine cells, while Doc2 is found not only in the brain but in tissues, including mast cells, chromaffin cells, and osteoblasts. Rabphilin and Doc2s share highly homologous tandem C2 domains, although their N-terminal structures are completely different: rabphilin contains an N-terminal Rab-binding domain (RBD),7 whereas Doc2 contains an N-terminal Munc13-1-interacting domain (MID). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176030 [Multi-domain] Cd Length: 133 Bit Score: 100.11 E-value: 8.14e-25

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 359 RIAFSLKYEQQTQSLVVHVKECHQLAYADeAKKRSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYEIPESLLA 438
Cdd:cd08384     1 KILVSLMYNTQRRGLIVGIIRCVNLAAMD-ANGYSDPFVKLYLKPDAGKKSKHKTQVKKKTLNPEFNEEFFYDIKHSDLA 79

                          90       100
                  ....*....|....*....|....*....
gi 1631733364 439 QRTLQFSVWHHGRFGRNTFLGEAEIQMDS 467
Cdd:cd08384    80 KKTLEITVWDKDIGKSNDYIGGLQLGINA 108

C2 domain;

Pssm-ID: 425499 [Multi-domain] Cd Length: 104 Bit Score: 98.93 E-value: 8.30e-25

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 371 QSLVVHVKECHQLAYADEAKKrSNPYVKTYLLPDKSrqgKRKTSIKRDTINPLYDETLRYEIPESllAQRTLQFSVWHHG 450
Cdd:pfam00168   1 GRLTVTVIEAKNLPPKDGNGT-SDPYVKVYLLDGKQ---KKKTKVVKNTLNPVWNETFTFSVPDP--ENAVLEIEVYDYD 74

                          90       100       110
                  ....*....|....*....|....*....|
gi 1631733364 451 RFGRNTFLGEAEIQMDSWKLDKKLDHCLPL 480
Cdd:pfam00168  75 RFGRDDFIGEVRIPLSELDSGEGLDGWYPL 104

C2 domain;

Pssm-ID: 425499 [Multi-domain] Cd Length: 104 Bit Score: 98.55 E-value: 1.53e-24

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 526 GELQVWIKEAKNLTAAKAGGTSDSFVKGYLLpmrNKASKRKTPVMKKTLNPHYNHTFVYNgvrLEDLQHMCLELTVWDRE 605
Cdd:pfam00168   1 GRLTVTVIEAKNLPPKDGNGTSDPYVKVYLL---DGKQKKKTKVVKNTLNPVWNETFTFS---VPDPENAVLEIEVYDYD 74

                          90       100
                  ....*....|....*....|....*....
gi 1631733364 606 PLASNDFLGGVRLGVGTGISNGEVVDWMD 634
Cdd:pfam00168  75 RFGRDDFIGEVRIPLSELDSGEGLDGWYP 103

C2 domain second repeat present in Rabphilin and Double C2 domain; Rabphilin is found neurons and in neuroendrocrine cells, while Doc2 is found not only in the brain but in tissues, including mast cells, chromaffin cells, and osteoblasts. Rabphilin and Doc2s share highly homologous tandem C2 domains, although their N-terminal structures are completely different: rabphilin contains an N-terminal Rab-binding domain (RBD),7 whereas Doc2 contains an N-terminal Munc13-1-interacting domain (MID). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176030 [Multi-domain] Cd Length: 133 Bit Score: 98.96 E-value: 2.05e-24

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 526 GELQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRNKASKRKTPVMKKTLNPHYNHTFVYNgVRLEDLQHMCLELTVWDRE 605
Cdd:cd08384    13 RGLIVGIIRCVNLAAMDANGYSDPFVKLYLKPDAGKKSKHKTQVKKKTLNPEFNEEFFYD-IKHSDLAKKTLEITVWDKD 91

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*.
gi 1631733364 606 PLASNDFLGGVRLGVgtgisngevvdwmDSTGEEVSLWQKMRQYPG 651
Cdd:cd08384    92 IGKSNDYIGGLQLGI-------------NAKGERLRHWLDCLKNPD 124

C2 domain second repeat present in class II phosphatidylinositol 3-kinases (PI3Ks); There are 3 classes of PI3Ks based on structure, regulation, and specificity. All classes contain a N-terminal C2 domain, a PIK domain, and a kinase catalytic domain. Unlike class I and class III, class II PI3Ks have additionally a PX domain and a C-terminal C2 domain containing a nuclear localization signal both of which bind phospholipids though in a slightly different fashion. PI3Ks (AKA phosphatidylinositol (PtdIns) 3-kinases) regulate cell processes such as cell growth, differentiation, proliferation, and motility. PI3Ks work on phosphorylation of phosphatidylinositol, phosphatidylinositide (4)P (PtdIns (4)P),2 or PtdIns(4,5)P2. Specifically they phosphorylate the D3 hydroxyl group of phosphoinositol lipids on the inositol ring. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176027 [Multi-domain] Cd Length: 122 Bit Score: 96.21 E-value: 1.32e-23

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 524 EGGELQVWIKEAKNLtAAKAGGTSDSFVKGYLLPMRNKASKRKTPVMKKTLNPHYNHTFVYNGVRLEDLQHMCLELTVWD 603
Cdd:cd08381    11 KNGTLFVMVMHAKNL-PLLDGSDPDPYVKTYLLPDPQKTTKRKTKVVRKTRNPTFNEMLVYDGLPVEDLQQRVLQVSVWS 89

                          90       100
                  ....*....|....*....|....*....
gi 1631733364 604 REPLASNDFLGGVRLGVGTGISNGEVVDW 632
Cdd:cd08381    90 HDSLVENEFLGGVCIPLKKLDLSQETEKW 118

C2 domain first repeat contained in Rab3-interacting molecule (RIM) proteins; RIMs are believed to organize specialized sites of the plasma membrane called active zones. They also play a role in controlling neurotransmitter release, plasticity processes, as well as memory and learning. RIM contains an N-terminal zinc finger domain, a PDZ domain, and two C-terminal C2 domains (C2A, C2B). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology and do not bind Ca2+.

Pssm-ID: 175997 [Multi-domain] Cd Length: 125 Bit Score: 96.16 E-value: 1.41e-23

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 523 GEGGELQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRNKASKRKTPVMKKTLNPHYNHTFVYNGVRLEDLQHMCLELTVW 602
Cdd:cd04031    13 KVTSQLIVTVLQARDLPPRDDGSLRNPYVKVYLLPDRSEKSKRRTKTVKKTLNPEWNQTFEYSNVRRETLKERTLEVTVW 92

                          90       100
                  ....*....|....*....|....*.
gi 1631733364 603 DREPLASNDFLGGVRLGVGTGISNGE 628
Cdd:cd04031    93 DYDRDGENDFLGEVVIDLADALLDDE 118

C2A domain first repeat present in Synaptotagmins 1, 5, 6, 9, and 10; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 1, a member of class 1 synaptotagmins, is located in the brain and endocranium and localized to the synaptic vesicles and secretory granules. It functions as a Ca2+ sensor for fast exocytosis as do synaptotagmins 5, 6, and 10. It is distinguished from the other synaptotagmins by having an N-glycosylated N-terminus. Synaptotagmins 5, 6, and 10, members of class 3 synaptotagmins, are located primarily in the brain and localized to the active zone and plasma membrane. They is distinguished from the other synaptotagmins by having disulfide bonds at its N-terminus. Synaptotagmin 6 also regulates the acrosome reaction, a unique Ca2+-regulated exocytosis, in sperm. Synaptotagmin 9, a class 5 synaptotagmins, is located in the brain and localized to the synaptic vesicles. It is thought to be a Ca2+-sensor for dense-core vesicle exocytosis. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176031 [Multi-domain] Cd Length: 124 Bit Score: 96.18 E-value: 1.43e-23

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYEQQTQSLVVHVKECHQLAYADeAKKRSNPYVKTYLLPDKSRqgKRKTSIKRDTINPLYDETLRYEIPESLL 437
Cdd:cd08385     3 GKLQFSLDYDFQSNQLTVGIIQAADLPAMD-MGGTSDPYVKVYLLPDKKK--KFETKVHRKTLNPVFNETFTFKVPYSEL 79

                          90       100
                  ....*....|....*....|....*...
gi 1631733364 438 AQRTLQFSVWHHGRFGRNTFLGEAEIQM 465
Cdd:cd08385    80 GNKTLVFSVYDFDRFSKHDLIGEVRVPL 107

C2A domain first repeat present in Synaptotagmins 15 and 17; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. It is thought to be involved in the trafficking and exocytosis of secretory vesicles in non-neuronal tissues and is Ca2+ independent. Human synaptotagmin 15 has 2 alternatively spliced forms that encode proteins with different C-termini. The larger, SYT15a, contains a N-terminal TM region, a putative fatty-acylation site, and 2 tandem C terminal C2 domains. The smaller, SYT15b, lacks the C-terminal portion of the second C2 domain. Unlike most other synaptotagmins it is nearly absent in the brain and rather is found in the heart, lungs, skeletal muscle, and testis. Synaptotagmin 17 is located in the brain, kidney, and prostate and is thought to be a peripheral membrane protein. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176036 [Multi-domain] Cd Length: 123 Bit Score: 95.79 E-value: 1.99e-23

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYEQQTQSLVVHVKECHQLAYADEAKKRSNPYVKTYLLPDKSRQgkRKTSIKRDTINPLYDETLRYEIPESLL 437
Cdd:cd08390     1 GRLWFSVQYDLEEEQLTVSLIKARNLPPRTKDVAHCDPFVKVCLLPDERRS--LQSKVKRKTQNPNFDETFVFQVSFKEL 78

                          90       100
                  ....*....|....*....|....
gi 1631733364 438 AQRTLQFSVWHHGRFGRNTFLGEA 461
Cdd:cd08390    79 QRRTLRLSVYDVDRFSRHCIIGHV 102

C2 domain third repeat present in uncharacterized human KIAA1228-like proteins; KIAA proteins are uncharacterized human proteins. They were compiled by the Kazusa mammalian cDNA project which identified more than 2000 human genes. They are identified by 4 digit codes that precede the KIAA designation. Many KIAA genes are still functionally uncharacterized including KIAA1228. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.

Pssm-ID: 175996 [Multi-domain] Cd Length: 127 Bit Score: 95.80 E-value: 2.00e-23

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 356 VTGRIAFSLKYEQQTQSLVVHVKECHQLAYADEAKKrSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYEIPES 435
Cdd:cd04030     1 PLGRIQLTIRYSSQRQKLIVTVHKCRNLPPCDSSDI-PDPYVRLYLLPDKSKSTRRKTSVKKDNLNPVFDETFEFPVSLE 79

                          90       100       110
                  ....*....|....*....|....*....|...
gi 1631733364 436 LLAQRTLQFSVWHHGRF--GRNTFLGEAEIQMD 466
Cdd:cd04030    80 ELKRRTLDVAVKNSKSFlsREKKLLGQVLIDLS 112

C2 domain first repeat present in Synaptotagmin-like proteins 1 and 2; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. Slp1/JFC1 and Slp2/exophilin 4 promote granule docking to the plasma membrane. Additionally, their C2A domains are both Ca2+ independent, unlike Slp3 and Slp4/granuphilin which are Ca2+ dependent. It is thought that SHD (except for the Slp4-SHD) functions as a specific Rab27A/B-binding domain. In addition to Slps, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176039 [Multi-domain] Cd Length: 125 Bit Score: 95.58 E-value: 2.35e-23

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 496 KGELVVSLKYIPASKtpvggdrkkskggeggELQVWIKEAKNLTAAKA-GGTSDSFVKGYLLPMRNKASKRKTPVMKKTL 574
Cdd:cd08393     1 QGSVQFALDYDPKLR----------------ELHVHVIQCQDLAAADPkKQRSDPYVKTYLLPDKSNRGKRKTSVKKKTL 64

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*...
gi 1631733364 575 NPHYNHTFVYNgVRLEDLQHMCLELTVWDREPLASNDFLGGVRLGVGT 622
Cdd:cd08393    65 NPVFNETLRYK-VEREELPTRVLNLSVWHRDSLGRNSFLGEVEVDLGS 111

C2 domain first repeat contained in Rab3-interacting molecule (RIM) proteins; RIMs are believed to organize specialized sites of the plasma membrane called active zones. They also play a role in controlling neurotransmitter release, plasticity processes, as well as memory and learning. RIM contains an N-terminal zinc finger domain, a PDZ domain, and two C-terminal C2 domains (C2A, C2B). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology and do not bind Ca2+.

Pssm-ID: 175997 [Multi-domain] Cd Length: 125 Bit Score: 95.78 E-value: 2.36e-23

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 356 VTGRIAFSLKYEQQTQSLVVHVKECHQLAYADEAKKRsNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRY-EIPE 434
Cdd:cd04031     1 ITGRIQIQLWYDKVTSQLIVTVLQARDLPPRDDGSLR-NPYVKVYLLPDRSEKSKRRTKTVKKTLNPEWNQTFEYsNVRR 79

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*..
gi 1631733364 435 SLLAQRTLQFSVWHHGRFGRNTFLGEAEIQMDSWKLDKKlDHCLPLH 481
Cdd:cd04031    80 ETLKERTLEVTVWDYDRDGENDFLGEVVIDLADALLDDE-PHWYPLQ 125

C2 domain second repeat present in Synaptotagmin 1; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 1, a member of the class 1 synaptotagmins, is located in the brain and endocranium and localized to the synaptic vesicles and secretory granules. It functions as a Ca2+ sensor for fast exocytosis. It, like synaptotagmin-2, has an N-glycosylated N-terminus. Synaptotagmin 4, a member of class 4 synaptotagmins, is located in the brain. It functions are unknown. It, like synaptotagmin-11, has an Asp to Ser substitution in its C2A domain. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176047 [Multi-domain] Cd Length: 136 Bit Score: 94.78 E-value: 8.08e-23

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 497 GELVVSLKYIPASktpvggdrkkskggegGELQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRNKASKRKTPVMKKTLNP 576
Cdd:cd08402     2 GDICFSLRYVPTA----------------GKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKRTLNP 65

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1631733364 577 HYNHTFVYNgVRLEDLQHMCLELTVWDREPLASNDFLGGVRLgvGTGISNGEVVDWMD 634
Cdd:cd08402    66 YYNESFSFE-VPFEQIQKVHLIVTVLDYDRIGKNDPIGKVVL--GCNATGAELRHWSD 120

C2 domain second repeat present in Synaptotagmin; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. There are several classes of Synaptotagmins. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 175975 [Multi-domain] Cd Length: 134 Bit Score: 89.95 E-value: 2.70e-21

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 497 GELVVSLKYIPASktpvggdrkkskggegGELQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRNKASKRKTPVMKKTLNP 576
Cdd:cd00276     1 GELLLSLSYLPTA----------------ERLTVVVLKARNLPPSDGKGLSDPYVKVSLLQGGKKLKKKKTSVKKGTLNP 64

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1631733364 577 HYNHTFVYNgVRLEDLQHMCLELTVWDREPLASNDFLGGVRLGVgtgisngevvdwmDSTGEEVSLWQKMRQYPG 651
Cdd:cd00276    65 VFNEAFSFD-VPAEQLEEVSLVITVVDKDSVGRNEVIGQVVLGP-------------DSGGEELEHWNEMLASPR 125

C2 domain in Protein Kinase C (PKC) alpha and gamma; A single C2 domain is found in PKC alpha and gamma. The PKC family of serine/threonine kinases regulates apoptosis, proliferation, migration, motility, chemo-resistance, and differentiation. There are 3 groups: group 1(alpha, betaI, beta II, gamma) which require phospholipids and calcium, group 2 (delta, epsilon, theta, eta) which do not require calcium for activation, and group 3 (xi, iota/lambda) which are atypical and can be activated in the absence of diacylglycerol and calcium. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology.

Pssm-ID: 175992 [Multi-domain] Cd Length: 131 Bit Score: 89.24 E-value: 5.42e-21

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 524 EGGELQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRNKASKRKTPVMKKTLNPHYNHTFVYNgVRLEDLqHMCLELTVWD 603
Cdd:cd04026    11 KDNKLTVEVREAKNLIPMDPNGLSDPYVKLKLIPDPKNETKQKTKTIKKTLNPVWNETFTFD-LKPADK-DRRLSIEVWD 88

                          90
                  ....*....|....*...
gi 1631733364 604 REPLASNDFLGGVRLGVG 621
Cdd:cd04026    89 WDRTTRNDFMGSLSFGVS 106

C2 domain second repeat present in Synaptotagmin 7; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 7, a member of class 2 synaptotagmins, is located in presynaptic plasma membranes in neurons, dense-core vesicles in endocrine cells, and lysosomes in fibroblasts. It has been shown to play a role in regulation of Ca2+-dependent lysosomal exocytosis in fibroblasts and may also function as a vesicular Ca2+-sensor. It is distinguished from the other synaptotagmins by having over 12 splice forms. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176050 [Multi-domain] Cd Length: 136 Bit Score: 87.86 E-value: 2.02e-20

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 497 GELVVSLKYIPASktpvggdrkkskggegGELQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRNKASKRKTPVMKKTLNP 576
Cdd:cd08405     2 GELLLSLCYNPTA----------------NRITVNIIKARNLKAMDINGTSDPYVKVWLMYKDKRVEKKKTVIKKRTLNP 65

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1631733364 577 HYNHTFVYNgVRLEDLQHMCLELTVWDREPLASNDFLGGVRLGvgtgisngevvdWMdSTGEEVSLWQKMRQYP 650
Cdd:cd08405    66 VFNESFIFN-IPLERLRETTLIITVMDKDRLSRNDLIGKIYLG------------WK-SGGLELKHWKDMLSKP 125

C2A domain first repeat present in Synaptotagmin 7; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 7, a member of class 2 synaptotagmins, is located in presynaptic plasma membranes in neurons, dense-core vesicles in endocrine cells, and lysosomes in fibroblasts. It has been shown to play a role in regulation of Ca2+-dependent lysosomal exocytosis in fibroblasts and may also function as a vesicular Ca2+-sensor. It is distinguished from the other synaptotagmins by having over 12 splice forms. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176032 [Multi-domain] Cd Length: 125 Bit Score: 86.23 E-value: 4.49e-20

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYEQQTQSLVVHVKECHQLAyADEAKKRSNPYVKTYLLPDKSRqgKRKTSIKRDTINPLYDETLRYE-IPESL 436
Cdd:cd08386     3 GRIQFSVSYDFQESTLTLKILKAVELP-AKDFSGTSDPFVKIYLLPDKKH--KLETKVKRKNLNPHWNETFLFEgFPYEK 79

                          90       100       110
                  ....*....|....*....|....*....|....
gi 1631733364 437 LAQRTLQFSVWHHGRFGRNTFLGEAEIQMDSWKL 470
Cdd:cd08386    80 LQQRVLYLQVLDYDRFSRNDPIGEVSLPLNKVDL 113

C2A domain first repeat present in Synaptotagmins 4 and 11; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmins 4 and 11, class 4 synaptotagmins, are located in the brain. Their functions are unknown. They are distinguished from the other synaptotagmins by having and Asp to Ser substitution in their C2A domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176034 [Multi-domain] Cd Length: 128 Bit Score: 85.48 E-value: 9.03e-20

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYEQQTQSLVVHVKECHQLAYADEAKKRSNPYVKTYLLPDKsrQGKRKTSIKRDTINPLYDETLR-YEIPESL 436
Cdd:cd08388     3 GTLFFSLRYNSEKKALLVNIIECRDLPAMDEQSGTSDPYVKLQLLPEK--EHKVKTRVLRKTRNPVYDETFTfYGIPYNQ 80

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*...
gi 1631733364 437 LAQRTLQFSVWHHGRFGRNTFLGEAEIQMDSwkLDKKLDHCLPLHGKI 484
Cdd:cd08388    81 LQDLSLHFAVLSFDRYSRDDVIGEVVCPLAG--ADLLNEGELLVSREI 126

C2 domain first repeat present in Rabphilin and Double C2 domain; Rabphilin is found neurons and in neuroendrocrine cells, while Doc2 is found not only in the brain but in tissues, including mast cells, chromaffin cells, and osteoblasts. Rabphilin and Doc2s share highly homologous tandem C2 domains, although their N-terminal structures are completely different: rabphilin contains an N-terminal Rab-binding domain (RBD),7 whereas Doc2 contains an N-terminal Munc13-1-interacting domain (MID). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176000 [Multi-domain] Cd Length: 123 Bit Score: 85.41 E-value: 1.00e-19

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 497 GELVVSLKYIPASKtpvggdrkkskggeggELQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRNKASKRKTPVMKKTLNP 576
Cdd:cd04035     2 GTLEFTLLYDPANS----------------ALHCTIIRAKGLKAMDANGLSDPYVKLNLLPGASKATKLRTKTVHKTRNP 65

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|..
gi 1631733364 577 HYNHTFVYNGVRLEDLQHMCLELTVWDREPLaSNDFLGGVRL 618
Cdd:cd04035    66 EFNETLTYYGITEEDIQRKTLRLLVLDEDRF-GNDFLGETRI 106

C2 domain; The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.

Pssm-ID: 175973 [Multi-domain] Cd Length: 102 Bit Score: 83.27 E-value: 2.71e-19

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 528 LQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRnkasKRKTPVMKKTLNPHYNHTFVYNgvrLEDLQHMCLELTVWDREPL 607
Cdd:cd00030     1 LRVTVIEARNLPAKDLNGKSDPYVKVSLGGKQ----KFKTKVVKNTLNPVWNETFEFP---VLDPESDTLTVEVWDKDRF 73

                          90       100
                  ....*....|....*....|....
gi 1631733364 608 ASNDFLGGVRLGVGTGISNGEVVD 631
Cdd:cd00030    74 SKDDFLGEVEIPLSELLDSGKEGE 97

C2 domain first repeat present in Synaptotagmin-like proteins; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. Slp1/JFC1 and Slp2/exophilin 4 promote granule docking to the plasma membrane. Additionally, their C2A domains are both Ca2+ independent, unlike the case in Slp3 and Slp4/granuphilin in which their C2A domains are Ca2+ dependent. It is thought that SHD (except for the Slp4-SHD) functions as a specific Rab27A/B-binding domain. In addition to Slps, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. It has been demonstrated that Slp3 and Slp4/granuphilin promote dense-core vesicle exocytosis. Slp5 mRNA has been shown to be restricted to human placenta and liver suggesting a role in Rab27A-dependent membrane trafficking in specific tissues. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176056 [Multi-domain] Cd Length: 123 Bit Score: 83.84 E-value: 2.80e-19

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 497 GELVVSLKYipasktpvggDRKKskggegGELQVWIKEAKNLTAAKAG-GTSDSFVKGYLLPMRNKASKRKTPVMKKTLN 575
Cdd:cd08521     1 GEIEFSLSY----------NYKT------GSLEVHIKECRNLAYADEKkKRSNPYVKVYLLPDKSKQSKRKTSVKKNTTN 64

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|...
gi 1631733364 576 PHYNHTFVYNgVRLEDLQHMCLELTVWDREPLASNDFLGGVRL 618
Cdd:cd08521    65 PVFNETLKYH-ISKSQLETRTLQLSVWHHDRFGRNTFLGEVEI 106

C2 domain; The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.

Pssm-ID: 175973 [Multi-domain] Cd Length: 102 Bit Score: 82.89 E-value: 3.66e-19

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 373 LVVHVKECHQLAYADEAKKrSNPYVKTYLLPDKsrqgKRKTSIKRDTINPLYDETLRYEIPESllAQRTLQFSVWHHGRF 452
Cdd:cd00030     1 LRVTVIEARNLPAKDLNGK-SDPYVKVSLGGKQ----KFKTKVVKNTLNPVWNETFEFPVLDP--ESDTLTVEVWDKDRF 73

                          90       100
                  ....*....|....*....|....*....
gi 1631733364 453 GRNTFLGEAEIQMDSWKLD-KKLDHCLPL 480
Cdd:cd00030    74 SKDDFLGEVEIPLSELLDSgKEGELWLPL 102

FYVE-type zinc finger; This FYVE-type zinc finger is found at the N-terminus of effector proteins including rabphilin-3A and regulating synaptic membrane exocytosis protein 2.

Pssm-ID: 426716 Cd Length: 118 Bit Score: 83.19 E-value: 5.13e-19

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364   8 SFLSEEEKDLILSVLQRDEEVRKADEKRIRRLKNEL-LEIKRKGAKRGSQHYSDRTCARCQESLGRLSPKTNTCRGCNHL 86
Cdd:pfam02318   1 SKLTDEEAEHVWEVVQRDFDLRKKEEERLGELKGKLdKESSKRELLGNQAHLGETHCIRCLQPFGFLVNSKRQCLDCRKN 80

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 1631733364  87 VCRDCRIQESNGT-WRCKVCAKEIELKKATGDWFYD 121
Cdd:pfam02318  81 VCKKCGVYNKPEQgWLCDPCSEARELKKGSLEWFYK 116

Protein kinase C conserved region 2 (CalB); Ca2+-binding motif present in phospholipases, protein kinases C, and synaptotagmins (among others). Some do not appear to contain Ca2+-binding sites. Particular C2s appear to bind phospholipids, inositol polyphosphates, and intracellular proteins. Unusual occurrence in perforin. Synaptotagmin and PLC C2s are permuted in sequence with respect to N- and C-terminal beta strands. SMART detects C2 domains using one or both of two profiles.

Pssm-ID: 214577 [Multi-domain] Cd Length: 101 Bit Score: 81.76 E-value: 1.07e-18

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364  372 SLVVHVKECHQLAYADEAKKrSNPYVKTYLLPDKSRqgKRKTSIKRDTINPLYDETLRYEIPESLLaqRTLQFSVWHHGR 451
Cdd:smart00239   1 TLTVKIISARNLPPKDKGGK-SDPYVKVSLDGDPKE--KKKTKVVKNTLNPVWNETFEFEVPPPEL--AELEIEVYDKDR 75

                           90       100
                   ....*....|....*....|....*.
gi 1631733364  452 FGRNTFLGEAEIQMDSWKLDKKLDHC 477
Cdd:smart00239  76 FGRDDFIGQVTIPLSDLLLGGRHEKL 101

Protein kinase C conserved region 2 (CalB); Ca2+-binding motif present in phospholipases, protein kinases C, and synaptotagmins (among others). Some do not appear to contain Ca2+-binding sites. Particular C2s appear to bind phospholipids, inositol polyphosphates, and intracellular proteins. Unusual occurrence in perforin. Synaptotagmin and PLC C2s are permuted in sequence with respect to N- and C-terminal beta strands. SMART detects C2 domains using one or both of two profiles.

Pssm-ID: 214577 [Multi-domain] Cd Length: 101 Bit Score: 80.61 E-value: 2.62e-18

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364  528 LQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRNKasKRKTPVMKKTLNPHYNHTFVYNgvrLEDLQHMCLELTVWDREPL 607
Cdd:smart00239   2 LTVKIISARNLPPKDKGGKSDPYVKVSLDGDPKE--KKKTKVVKNTLNPVWNETFEFE---VPPPELAELEIEVYDKDRF 76

                           90       100
                   ....*....|....*....|....*
gi 1631733364  608 ASNDFLGGVRLGVGTGISNGEVVDW 632
Cdd:smart00239  77 GRDDFIGQVTIPLSDLLLGGRHEKL 101

FYVE-related domain found in the synaptotagmin-like proteins 3, 4, 5; The synaptotagmin-like proteins 1-5 (Slp1-5) family belongs to the carboxyl-terminal-type (C-type) tandem C2 proteins superfamily, which also contains the synaptotagmin and the Doc2 families. Slp proteins are putative membrane trafficking proteins that are characterized by the presence of a unique N-terminal Slp homology domain (SHD), and C-terminal tandem C2 domains (known as the C2A domain and C2B domain). The SHD consists of two conserved regions, designated SHD1 (Slp homology domain 1) and SHD2. The SHD1 and SHD2 of Slp3, Slp4 and Slp5 are separated by a putative FYVE zinc finger. By contrast, Slp1 and Slp2 lack such zinc finger and their SHD1 and SHD2 are linked together. This model corresponds to the FYVE zinc finger. At this point, Slp1 and Slp2 are not included in this model. Moreover, the FYVE domains of Slp3, Slp4 and Slp5 resemble a FYVE-related domain that is structurally similar to the canonical FYVE domains but lacks the three signature sequences: an N-terminal WxxD motif (x for any residue), the central basic R(R/K)HHCRxCG patch, and a C-terminal RVC motif.

Pssm-ID: 277286 Cd Length: 48 Bit Score: 78.11 E-value: 4.82e-18

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*...
gi 1631733364  61 RTCARCQESLGRLSPKTNTCRGCNHLVCRDCRIQESN-GTWRCKVCAK 107
Cdd:cd15747     1 RICARCREKLGFIFNRGARCPKCSHKVCKKCRVLTSNtGKWLCTVCHK 48

C2 domain second repeat present in Synaptotagmin; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. There are several classes of Synaptotagmins. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 175975 [Multi-domain] Cd Length: 134 Bit Score: 80.71 E-value: 5.87e-18

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYEQQTQSLVVHVKECHQLAyADEAKKRSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYEIPESLL 437
Cdd:cd00276     1 GELLLSLSYLPTAERLTVVVLKARNLP-PSDGKGLSDPYVKVSLLQGGKKLKKKKTSVKKGTLNPVFNEAFSFDVPAEQL 79

                          90       100
                  ....*....|....*....|....*.
gi 1631733364 438 AQRTLQFSVWHHGRFGRNTFLGEAEI 463
Cdd:cd00276    80 EEVSLVITVVDKDSVGRNEVIGQVVL 105

C2 domain first repeat present in Rabphilin and Double C2 domain; Rabphilin is found neurons and in neuroendrocrine cells, while Doc2 is found not only in the brain but in tissues, including mast cells, chromaffin cells, and osteoblasts. Rabphilin and Doc2s share highly homologous tandem C2 domains, although their N-terminal structures are completely different: rabphilin contains an N-terminal Rab-binding domain (RBD),7 whereas Doc2 contains an N-terminal Munc13-1-interacting domain (MID). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176000 [Multi-domain] Cd Length: 123 Bit Score: 78.86 E-value: 2.06e-17

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYEQQTQSLVVHVKECHQLAyADEAKKRSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYE-IPESL 436
Cdd:cd04035     2 GTLEFTLLYDPANSALHCTIIRAKGLK-AMDANGLSDPYVKLNLLPGASKATKLRTKTVHKTRNPEFNETLTYYgITEED 80

                          90       100
                  ....*....|....*....|....*....
gi 1631733364 437 LAQRTLQFSVWHHGRFGrNTFLGEAEIQM 465
Cdd:cd04035    81 IQRKTLRLLVLDEDRFG-NDFLGETRIPL 108

C2A domain first repeat present in Synaptotagmins 1, 5, 6, 9, and 10; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 1, a member of class 1 synaptotagmins, is located in the brain and endocranium and localized to the synaptic vesicles and secretory granules. It functions as a Ca2+ sensor for fast exocytosis as do synaptotagmins 5, 6, and 10. It is distinguished from the other synaptotagmins by having an N-glycosylated N-terminus. Synaptotagmins 5, 6, and 10, members of class 3 synaptotagmins, are located primarily in the brain and localized to the active zone and plasma membrane. They is distinguished from the other synaptotagmins by having disulfide bonds at its N-terminus. Synaptotagmin 6 also regulates the acrosome reaction, a unique Ca2+-regulated exocytosis, in sperm. Synaptotagmin 9, a class 5 synaptotagmins, is located in the brain and localized to the synaptic vesicles. It is thought to be a Ca2+-sensor for dense-core vesicle exocytosis. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176031 [Multi-domain] Cd Length: 124 Bit Score: 78.85 E-value: 2.08e-17

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 526 GELQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRNKasKRKTPVMKKTLNPHYNHTFVYNgVRLEDLQHMCLELTVWDRE 605
Cdd:cd08385    16 NQLTVGIIQAADLPAMDMGGTSDPYVKVYLLPDKKK--KFETKVHRKTLNPVFNETFTFK-VPYSELGNKTLVFSVYDFD 92

                          90       100
                  ....*....|....*....|....*....
gi 1631733364 606 PLASNDFLGGVRLGVGTGISNGEVVDWMD 634
Cdd:cd08385    93 RFSKHDLIGEVRVPLLTVDLGHVTEEWRD 121

C2A domain first repeat present in Synaptotagmin 7; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 7, a member of class 2 synaptotagmins, is located in presynaptic plasma membranes in neurons, dense-core vesicles in endocrine cells, and lysosomes in fibroblasts. It has been shown to play a role in regulation of Ca2+-dependent lysosomal exocytosis in fibroblasts and may also function as a vesicular Ca2+-sensor. It is distinguished from the other synaptotagmins by having over 12 splice forms. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176032 [Multi-domain] Cd Length: 125 Bit Score: 76.21 E-value: 1.69e-16

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 528 LQVWIKEAKNLTAAKAGGTSDSFVKGYLLPmrNKASKRKTPVMKKTLNPHYNHTFVYNGVRLEDLQHMCLELTVWDREPL 607
Cdd:cd08386    18 LTLKILKAVELPAKDFSGTSDPFVKIYLLP--DKKHKLETKVKRKNLNPHWNETFLFEGFPYEKLQQRVLYLQVLDYDRF 95

                          90
                  ....*....|.
gi 1631733364 608 ASNDFLGGVRL 618
Cdd:cd08386    96 SRNDPIGEVSL 106

C2 domain third repeat present in uncharacterized human KIAA1228-like proteins; KIAA proteins are uncharacterized human proteins. They were compiled by the Kazusa mammalian cDNA project which identified more than 2000 human genes. They are identified by 4 digit codes that precede the KIAA designation. Many KIAA genes are still functionally uncharacterized including KIAA1228. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.

Pssm-ID: 175996 [Multi-domain] Cd Length: 127 Bit Score: 75.77 E-value: 2.17e-16

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 528 LQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRNKASKRKTPVMKKTLNPHYNHTFVYNgVRLEDLQHMCLELTVWDREPL 607
Cdd:cd04030    18 LIVTVHKCRNLPPCDSSDIPDPYVRLYLLPDKSKSTRRKTSVKKDNLNPVFDETFEFP-VSLEELKRRTLDVAVKNSKSF 96

                          90
                  ....*....|...
gi 1631733364 608 AS--NDFLGGVRL 618
Cdd:cd04030    97 LSreKKLLGQVLI 109

C2 domain second repeat present in Synaptotagmin 1; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 1, a member of the class 1 synaptotagmins, is located in the brain and endocranium and localized to the synaptic vesicles and secretory granules. It functions as a Ca2+ sensor for fast exocytosis. It, like synaptotagmin-2, has an N-glycosylated N-terminus. Synaptotagmin 4, a member of class 4 synaptotagmins, is located in the brain. It functions are unknown. It, like synaptotagmin-11, has an Asp to Ser substitution in its C2A domain. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176047 [Multi-domain] Cd Length: 136 Bit Score: 75.90 E-value: 2.61e-16

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYEQQTQSLVVHVKECHQLAYADeAKKRSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYEIPESLL 437
Cdd:cd08402     2 GDICFSLRYVPTAGKLTVVILEAKNLKKMD-VGGLSDPYVKIHLMQNGKRLKKKKTTIKKRTLNPYYNESFSFEVPFEQI 80

                          90       100
                  ....*....|....*....|...
gi 1631733364 438 AQRTLQFSVWHHGRFGRNTFLGE 460
Cdd:cd08402    81 QKVHLIVTVLDYDRIGKNDPIGK 103

C2 domain in Protein Kinase C (PKC) alpha and gamma; A single C2 domain is found in PKC alpha and gamma. The PKC family of serine/threonine kinases regulates apoptosis, proliferation, migration, motility, chemo-resistance, and differentiation. There are 3 groups: group 1(alpha, betaI, beta II, gamma) which require phospholipids and calcium, group 2 (delta, epsilon, theta, eta) which do not require calcium for activation, and group 3 (xi, iota/lambda) which are atypical and can be activated in the absence of diacylglycerol and calcium. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology.

Pssm-ID: 175992 [Multi-domain] Cd Length: 131 Bit Score: 73.06 E-value: 2.15e-15

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYEQQtqSLVVHVKECHQLAYADeAKKRSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYEIPESLL 437
Cdd:cd04026     2 GRIYLKISVKDN--KLTVEVREAKNLIPMD-PNGLSDPYVKLKLIPDPKNETKQKTKTIKKTLNPVWNETFTFDLKPADK 78

                          90       100
                  ....*....|....*....|..
gi 1631733364 438 AQRtLQFSVWHHGRFGRNTFLG 459
Cdd:cd04026    79 DRR-LSIEVWDWDRTTRNDFMG 99

C2 domain second repeat present in Synaptotagmin 4; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 4, a member of class 4 synaptotagmins, is located in the brain. It functions are unknown. It, like synaptotagmin-11, has an Asp to Ser substitution in its C2A domain. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176049 [Multi-domain] Cd Length: 136 Bit Score: 72.46 E-value: 4.87e-15

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 496 KGELVVSLKYIPASKTpvggdrkkskggeggeLQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRNKASKRKTPVMKKTLN 575
Cdd:cd08404     1 RGELLLSLCYQPTTNR----------------LTVVVLKARHLPKMDVSGLADPYVKVNLYYGKKRISKKKTHVKKCTLN 64

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1631733364 576 PHYNHTFVYNgVRLEDLQHMCLELTVWDREPLASNDFLGGVRLGVGTGISNGEVV-DWMDSTGEEVSLWQKMR 647
Cdd:cd08404    65 PVFNESFVFD-IPSEELEDISVEFLVLDSDRVTKNEVIGRLVLGPKASGSGGHHWkEVCNPPRRQIAEWHMLC 136

C2 domain second repeat in Munc13 (mammalian uncoordinated)-like proteins; C2-like domains are thought to be involved in phospholipid binding in a Ca2+ independent manner in both Unc13 and Munc13. Caenorabditis elegans Unc13 has a central domain with sequence similarity to PKC, which includes C1 and C2-related domains. Unc13 binds phorbol esters and DAG with high affinity in a phospholipid manner. Mutations in Unc13 results in abnormal neuronal connections and impairment in cholinergic neurotransmission in the nematode. Munc13 is the mammalian homolog which are expressed in the brain. There are 3 isoforms (Munc13-1, -2, -3) and are thought to play a role in neurotransmitter release and are hypothesized to be high-affinity receptors for phorbol esters. Unc13 and Munc13 contain both C1 and C2 domains. There are two C2 related domains present, one central and one at the carboxyl end. Munc13-1 contains a third C2-like domain. Munc13 interacts with syntaxin, synaptobrevin, and synaptotagmin suggesting a role for these as scaffolding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.

Pssm-ID: 175976 [Multi-domain] Cd Length: 133 Bit Score: 71.11 E-value: 1.01e-14

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 527 ELQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMR--NKASKRKTPVMKKTLNPHYNHTFVYNgVRLEDLQH--MCLELTVW 602
Cdd:cd04009    17 SLRVEILNARNLLPLDSNGSSDPFVKVELLPRHlfPDVPTPKTQVKKKTLFPLFDESFEFN-VPPEQCSVegALLLFTVK 95

                          90
                  ....*....|..
gi 1631733364 603 DREPLASNDFLG 614
Cdd:cd04009    96 DYDLLGSNDFEG 107

C2A domain first repeat present in Synaptotagmin 8; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176033 [Multi-domain] Cd Length: 124 Bit Score: 70.51 E-value: 1.43e-14

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 356 VTGRIAFSLKYEQQTQSLVVHVKECHQLAyADEAKKRSNPYVKTYLLPDKSRQgkRKTSIKRDTINPLYDETLRYEIPES 435
Cdd:cd08387     1 TRGELHFSLEYDKDMGILNVKLIQARNLQ-PRDFSGTADPYCKVRLLPDRSNT--KQSKIHKKTLNPEFDESFVFEVPPQ 77

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|
gi 1631733364 436 LLAQRTLQFSVWHHGRFGRNTFLGEAEIQMDSWKLDKKLD 475
Cdd:cd08387    78 ELPKRTLEVLLYDFDQFSRDECIGVVELPLAEVDLSEKLD 117

C2 domain second repeat present in Synaptotagmins 3, 5, 6, 9, and 10; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 3, a member of class 3 synaptotagmins, is located in the brain and localized to the active zone and plasma membrane. It functions as a Ca2+ sensor for fast exocytosis. It, along with synaptotagmins 5,6, and 10, has disulfide bonds at its N-terminus. Synaptotagmin 9, a class 5 synaptotagmins, is located in the brain and localized to the synaptic vesicles. It is thought to be a Ca2+-sensor for dense-core vesicle exocytosis. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176048 [Multi-domain] Cd Length: 134 Bit Score: 69.46 E-value: 5.17e-14

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYEQQTQSLVVHVKECHQLAYADEAKKrSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYEIPESLL 437
Cdd:cd08403     1 GELMFSLCYLPTAGRLTLTIIKARNLKAMDITGF-SDPYVKVSLMCEGRRLKKKKTSVKKNTLNPTYNEALVFDVPPENV 79

                          90       100
                  ....*....|....*....|..
gi 1631733364 438 AQRTLQFSVWHHGRFGRNTFLG 459
Cdd:cd08403    80 DNVSLIIAVVDYDRVGHNELIG 101

C2 domain second repeat present in Synaptotagmins 3, 5, 6, 9, and 10; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 3, a member of class 3 synaptotagmins, is located in the brain and localized to the active zone and plasma membrane. It functions as a Ca2+ sensor for fast exocytosis. It, along with synaptotagmins 5,6, and 10, has disulfide bonds at its N-terminus. Synaptotagmin 9, a class 5 synaptotagmins, is located in the brain and localized to the synaptic vesicles. It is thought to be a Ca2+-sensor for dense-core vesicle exocytosis. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176048 [Multi-domain] Cd Length: 134 Bit Score: 68.69 E-value: 9.42e-14

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 497 GELVVSLKYIPASktpvggdrkkskggegGELQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRNKASKRKTPVMKKTLNP 576
Cdd:cd08403     1 GELMFSLCYLPTA----------------GRLTLTIIKARNLKAMDITGFSDPYVKVSLMCEGRRLKKKKTSVKKNTLNP 64

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....
gi 1631733364 577 HYNHTFVYNgVRLEDLQHMCLELTVWDREPLASNDFLGGVRLGV 620
Cdd:cd08403    65 TYNEALVFD-VPPENVDNVSLIIAVVDYDRVGHNELIGVCRVGP 107

C2 domain second repeat present in Synaptotagmin 7; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 7, a member of class 2 synaptotagmins, is located in presynaptic plasma membranes in neurons, dense-core vesicles in endocrine cells, and lysosomes in fibroblasts. It has been shown to play a role in regulation of Ca2+-dependent lysosomal exocytosis in fibroblasts and may also function as a vesicular Ca2+-sensor. It is distinguished from the other synaptotagmins by having over 12 splice forms. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176050 [Multi-domain] Cd Length: 136 Bit Score: 68.21 E-value: 1.55e-13

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYEQQTQSLVVHVKECHQLAYADEAKKrSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYEIPESLL 437
Cdd:cd08405     2 GELLLSLCYNPTANRITVNIIKARNLKAMDINGT-SDPYVKVWLMYKDKRVEKKKTVIKKRTLNPVFNESFIFNIPLERL 80

                          90       100       110
                  ....*....|....*....|....*....|....*....
gi 1631733364 438 AQRTLQFSVWHHGRFGRNTFLG-------EAEIQMDSWK 469
Cdd:cd08405    81 RETTLIITVMDKDRLSRNDLIGkiylgwkSGGLELKHWK 119

C2 domain second repeat present in Synaptotagmin 17; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 17 is located in the brain, kidney, and prostate and is thought to be a peripheral membrane protein. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176055 [Multi-domain] Cd Length: 135 Bit Score: 67.99 E-value: 1.82e-13

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 497 GELVVSLKYIPASktpvggdrkkskggegGELQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRNKASKRKTPVMKKTLNP 576
Cdd:cd08410     1 GELLLSLNYLPSA----------------GRLNVDIIRAKQLLQTDMSQGSDPFVKIQLVHGLKLIKTKKTSCMRGTIDP 64

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1631733364 577 HYNHTFVYNgVRLEDLQHMCLELTVWDREPLASNDFLGGVrlgvgtgisngeVVDWMDSTGEEVSLWQKMR 647
Cdd:cd08410    65 FYNESFSFK-VPQEELENVSLVFTVYGHNVKSSNDFIGRI------------VIGQYSSGPSETNHWRRML 122

FYVE-related domain found in synaptotagmin-like protein 3 (Slp3) and similar proteins; Slp3, also termed exophilin-6, functions as a Rab27A-specific effector in cytotoxic T lymphocytes. It binds to kinesin-1 motor through interaction with the tetratricopeptide repeat of the kinesin-1 light chain (KLC1). The kinesin-1/Slp3/Rab27a complex plays a role in mediating the terminal transport of lytic granules to the immune synapse. Slp3 contains an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains. The Slp homology domain (SHD) consists of two conserved regions, designated SHD1 (Slp homology domain 1) and SHD2, which may function as protein interaction sites. The SHD1 and SHD2 of Slp3 are separated by a putative FYVE zinc finger, which resembles a FYVE-related domain that is structurally similar to the canonical FYVE domains but lacks the three signature sequences: an N-terminal WxxD motif (x for any residue), the central basic R(R/K)HHCRxCG patch, and a C-terminal RVC motif. In addition, the Slp3 C2A domain showed Ca2+-dependent phospholipid binding activity. At this point, Slp3 is a Ca2+-dependent isoform in Slp proteins family.

Pssm-ID: 277304 Cd Length: 48 Bit Score: 64.83 E-value: 2.20e-13

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*.
gi 1631733364  60 DRTCARCQESLGRLSPKTNTCRGCNHLVCRDCRIQESNGTWRCKVC 105
Cdd:cd15765     1 ERSCARCQKPLGKLLNRGAVCNGCSHRVCSECRVFLGREIWKCTVC 46

C2 domain second repeat present in Synaptotagmin 4; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 4, a member of class 4 synaptotagmins, is located in the brain. It functions are unknown. It, like synaptotagmin-11, has an Asp to Ser substitution in its C2A domain. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176049 [Multi-domain] Cd Length: 136 Bit Score: 67.45 E-value: 2.27e-13

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYEQQTQSLVVHVKECHQLAYADEAKKrSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYEIPESLL 437
Cdd:cd08404     2 GELLLSLCYQPTTNRLTVVVLKARHLPKMDVSGL-ADPYVKVNLYYGKKRISKKKTHVKKCTLNPVFNESFVFDIPSEEL 80

                          90       100       110
                  ....*....|....*....|....*....|
gi 1631733364 438 AQRTLQFSVWHHGRFGRNTFLGEAEIQMDS 467
Cdd:cd08404    81 EDISVEFLVLDSDRVTKNEVIGRLVLGPKA 110

C2 domain second repeat present in Synaptotagmin 12; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 12, a member of class 6 synaptotagmins, is located in the brain. It functions are unknown. It, like synaptotagmins 8 and 13, do not have any consensus Ca2+ binding sites. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176051 [Multi-domain] Cd Length: 136 Bit Score: 65.58 E-value: 1.12e-12

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYEQQTQSLVVHVKECHQLaYADEAKKRSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYEIPESLL 437
Cdd:cd08406     2 GEILLSLSYLPTAERLTVVVVKARNL-VWDNGKTTADPFVKVYLLQDGRKISKKKTSVKRDDTNPIFNEAMIFSVPAIVL 80

                          90       100
                  ....*....|....*....|..
gi 1631733364 438 AQRTLQFSVWHHGRFGRNTFLG 459
Cdd:cd08406    81 QDLSLRVTVAESTEDGKTPNVG 102

C2 domain third repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); MCTPs are involved in Ca2+ signaling at the membrane. The cds in this family contain multiple C2 domains as well as a C-terminal PRT domain. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.

Pssm-ID: 176023 [Multi-domain] Cd Length: 119 Bit Score: 61.93 E-value: 1.44e-11

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 526 GELQVWIKEAKNLTAAKAGGTSDSFVkgyLLPMRNkaSKRKTPVMKKTLNPHYNHTFVYNgvrLEDLqHMCLELTVWDRE 605
Cdd:cd08377     1 GFLQVKVIRASGLAAADIGGKSDPFC---VLELVN--ARLQTHTIYKTLNPEWNKIFTFP---IKDI-HDVLEVTVYDED 71

                          90       100
                  ....*....|....*....|...
gi 1631733364 606 PLASNDFLGGVRLGVGTgISNGE 628
Cdd:cd08377    72 KDKKPEFLGKVAIPLLS-IKNGE 93

C2 domain second repeat in Munc13 (mammalian uncoordinated)-like proteins; C2-like domains are thought to be involved in phospholipid binding in a Ca2+ independent manner in both Unc13 and Munc13. Caenorabditis elegans Unc13 has a central domain with sequence similarity to PKC, which includes C1 and C2-related domains. Unc13 binds phorbol esters and DAG with high affinity in a phospholipid manner. Mutations in Unc13 results in abnormal neuronal connections and impairment in cholinergic neurotransmission in the nematode. Munc13 is the mammalian homolog which are expressed in the brain. There are 3 isoforms (Munc13-1, -2, -3) and are thought to play a role in neurotransmitter release and are hypothesized to be high-affinity receptors for phorbol esters. Unc13 and Munc13 contain both C1 and C2 domains. There are two C2 related domains present, one central and one at the carboxyl end. Munc13-1 contains a third C2-like domain. Munc13 interacts with syntaxin, synaptobrevin, and synaptotagmin suggesting a role for these as scaffolding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.

Pssm-ID: 175976 [Multi-domain] Cd Length: 133 Bit Score: 61.87 E-value: 1.85e-11

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYEQQTQSLVVHVKECHQLAYADEAKKrSNPYVKTYLLPDK--SRQGKRKTSIKRDTINPLYDETLRYEIP-- 433
Cdd:cd04009     3 GVLTVKAYYRASEQSLRVEILNARNLLPLDSNGS-SDPFVKVELLPRHlfPDVPTPKTQVKKKTLFPLFDESFEFNVPpe 81

                          90       100
                  ....*....|....*....|....*...
gi 1631733364 434 ESLLAQRTLQFSVWHHGRFGRNTFLGEA 461
Cdd:cd04009    82 QCSVEGALLLFTVKDYDLLGSNDFEGEA 109

FYVE-related domain found in synaptotagmin-like protein 5 (Slp5) and similar proteins; Slp5 is a novel Rab27A-specific effector that is highly expressed in placenta and liver. Slp5 specifically interacted with the GTP-bound form of Rab27A and is involved in Rab27A-dependent membrane trafficking in specific tissues. Slp5 contains an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains. The Slp homology domain (SHD) consists of two conserved regions, designated SHD1 (Slp homology domain 1) and SHD2, which may function as protein interaction sites. The SHD1 and SHD2 of Slp5 are separated by a putative FYVE zinc finger, which resembles a FYVE-related domain that is structurally similar to the canonical FYVE domains but lacks the three signature sequences: an N-terminal WxxD motif (x for any residue), the central basic R(R/K)HHCRxCG patch, and a C-terminal RVC motif.

Pssm-ID: 277305 Cd Length: 47 Bit Score: 58.68 E-value: 3.25e-11

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*..
gi 1631733364  61 RTCARCQESLGRLSPKTNTCRGCNHLVCRDCRIQESNGTWRCKVCAK 107
Cdd:cd15766     1 RLCVRCLKNLGLIFDRGDLCQECQLRVCSECRVLGANGKWKCTVCAK 47

C2 domain second repeat of Ras GTPase activating proteins (GAPs); RasGAPs suppress Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. The proteins here all contain two tandem C2 domains, a Ras-GAP domain, and a pleckstrin homology (PH)-like domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology.

Pssm-ID: 176057 [Multi-domain] Cd Length: 137 Bit Score: 60.46 E-value: 7.33e-11

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 373 LVVHVKECHQLAyadeaKKR---SNPYVK-TYLLPDKSRQgkRKTSIKRDTINPLYDETLRYEIPESL------------ 436
Cdd:cd08675     1 LSVRVLECRDLA-----LKSngtCDPFARvTLNYSSKTDT--KRTKVKKKTNNPRFDEAFYFELTIGFsyekksfkveee 73

                          90       100       110
                  ....*....|....*....|....*....|
gi 1631733364 437 -LAQRTLQFSVWHHGRFGRNTFLGEAEIQM 465
Cdd:cd08675    74 dLEKSELRVELWHASMVSGDDFLGEVRIPL 103

C2 domain second repeat present in Synaptotagmin 17; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 17 is located in the brain, kidney, and prostate and is thought to be a peripheral membrane protein. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176055 [Multi-domain] Cd Length: 135 Bit Score: 60.29 E-value: 7.33e-11

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYEQQTQSLVVHVKECHQLAYADEAKKrSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYEIPESLL 437
Cdd:cd08410     1 GELLLSLNYLPSAGRLNVDIIRAKQLLQTDMSQG-SDPFVKIQLVHGLKLIKTKKTSCMRGTIDPFYNESFSFKVPQEEL 79

                          90       100
                  ....*....|....*....|...
gi 1631733364 438 AQRTLQFSVWHHGRFGRNTFLGE 460
Cdd:cd08410    80 ENVSLVFTVYGHNVKSSNDFIGR 102

C2 domain second repeat present in Synaptotagmin 12; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 12, a member of class 6 synaptotagmins, is located in the brain. It functions are unknown. It, like synaptotagmins 8 and 13, do not have any consensus Ca2+ binding sites. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176051 [Multi-domain] Cd Length: 136 Bit Score: 59.42 E-value: 1.78e-10

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 497 GELVVSLKYIPASKtpvggdrkkskggeggELQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRNKASKRKTPVMKKTLNP 576
Cdd:cd08406     2 GEILLSLSYLPTAE----------------RLTVVVVKARNLVWDNGKTTADPFVKVYLLQDGRKISKKKTSVKRDDTNP 65

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1631733364 577 HYNHTFVYNgVRLEDLQHMCLELTVWDREPLASNDFLGGVRLG---VGTGISNgevvdW---MDSTGEEVSLWQKMR 647
Cdd:cd08406    66 IFNEAMIFS-VPAIVLQDLSLRVTVAESTEDGKTPNVGHVIIGpaaSGMGLSH-----WnqmLASLRKPVAMWHPLR 136

C2A domain first repeat present in Synaptotagmins 4 and 11; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmins 4 and 11, class 4 synaptotagmins, are located in the brain. Their functions are unknown. They are distinguished from the other synaptotagmins by having and Asp to Ser substitution in their C2A domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176034 [Multi-domain] Cd Length: 128 Bit Score: 58.90 E-value: 2.00e-10

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 528 LQVWIKEAKNLTAAKA-GGTSDSFVKGYLLPmrNKASKRKTPVMKKTLNPHYNHTFVYNGVRLEDLQHMCLELTV--WDR 604
Cdd:cd08388    18 LLVNIIECRDLPAMDEqSGTSDPYVKLQLLP--EKEHKVKTRVLRKTRNPVYDETFTFYGIPYNQLQDLSLHFAVlsFDR 95

C2A domain first repeat present in Synaptotagmin 8; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176033 [Multi-domain] Cd Length: 124 Bit Score: 57.41 E-value: 5.54e-10

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 523 GEGGELQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRNKAskRKTPVMKKTLNPHYNHTFVYnGVRLEDLQHMCLELTVW 602
Cdd:cd08387    13 KDMGILNVKLIQARNLQPRDFSGTADPYCKVRLLPDRSNT--KQSKIHKKTLNPEFDESFVF-EVPPQELPKRTLEVLLY 89

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*
gi 1631733364 603 DREPLASNDFLGGVRLGVGTgisngevVDWMdstgEEVSLWQKMR 647
Cdd:cd08387    90 DFDQFSRDECIGVVELPLAE-------VDLS----EKLDLWRKIQ 123

C2 domain second repeat of Ras GTPase activating proteins (GAPs); RasGAPs suppress Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. The proteins here all contain two tandem C2 domains, a Ras-GAP domain, and a pleckstrin homology (PH)-like domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology.

Pssm-ID: 176057 [Multi-domain] Cd Length: 137 Bit Score: 57.38 E-value: 7.16e-10

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 528 LQVWIKEAKNLtAAKAGGTSDSFVK-GYLLPMRNKAskRKTPVMKKTLNPHYNHTFVYNG------------VRLEDLQH 594
Cdd:cd08675     1 LSVRVLECRDL-ALKSNGTCDPFARvTLNYSSKTDT--KRTKVKKKTNNPRFDEAFYFELtigfsyekksfkVEEEDLEK 77

                          90       100
                  ....*....|....*....|....
gi 1631733364 595 MCLELTVWDREPLASNDFLGGVRL 618
Cdd:cd08675    78 SELRVELWHASMVSGDDFLGEVRI 101

C2 domain second repeat contained in Rab3-interacting molecule (RIM) proteins; RIMs are believed to organize specialized sites of the plasma membrane called active zones. They also play a role in controlling neurotransmitter release, plasticity processes, as well as memory and learning. RIM contains an N-terminal zinc finger domain, a PDZ domain, and two C-terminal C2 domains (C2A, C2B). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology and do not bind Ca2+.

Pssm-ID: 175994 [Multi-domain] Cd Length: 146 Bit Score: 55.47 E-value: 4.58e-09

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYeqQTQSLVVHVKECHQLAYADEAKKRSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYeiPESlL 437
Cdd:cd04028    18 GDIQLGLYD--KKGQLEVEVIRARGLVQKPGSKVLPAPYVKVYLLEGKKCIAKKKTKIARKTLDPLYQQQLVF--DVS-P 92

                          90       100       110
                  ....*....|....*....|....*....|
gi 1631733364 438 AQRTLQFSVW-HHGRFGRNTFLGEAEIQMD 466
Cdd:cd04028    93 TGKTLQVIVWgDYGRMDKKVFMGVAQILLD 122

C2 domain second repeat present in RAS p21 protein activator 3 (RasA3); RasA3 are members of GTPase activating protein 1 (GAP1), a Ras-specific GAP, which suppresses Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. RasA3 contains an N-terminal C2 domain, a Ras-GAP domain, a plextrin homology (PH)-like domain, and a Bruton's Tyrosine Kinase (BTK) zinc binding domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 175977 [Multi-domain] Cd Length: 148 Bit Score: 54.71 E-value: 7.82e-09

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 373 LVVHVKECHQLAYADEAkkrSNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETL-------------RYEIPESLLAQ 439
Cdd:cd04010     2 LSVRVIECSDLALKNGT---CDPYASVTLIYSNKKQDTKRTKVKKKTNNPQFDEAFyfdvtidsspekkQFEMPEEDAEK 78

                          90       100
                  ....*....|....*....|....*.
gi 1631733364 440 RTLQFSVWHHGRFGRNTFLGEAEIQM 465
Cdd:cd04010    79 LELRVDLWHASMGGGDVFLGEVRIPL 104

C2 domain first repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); plant subset; MCTPs are involved in Ca2+ signaling at the membrane. Plant-MCTPs are composed of a variable N-terminal sequence, four C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-II topology.

Pssm-ID: 175989 [Multi-domain] Cd Length: 127 Bit Score: 53.49 E-value: 1.61e-08

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 528 LQVWIKEAKNLTAAKAGGTSDSFVKgyllpMRNKASKRKTPVMKKTLNPHYNHTFVYNGVRLEDLQHMCLELTVW-DREP 606
Cdd:cd04022     2 LVVEVVDAQDLMPKDGQGSSSAYVE-----LDFDGQKKRTRTKPKDLNPVWNEKLVFNVSDPSRLSNLVLEVYVYnDRRS 76

                          90       100
                  ....*....|....*....|....
gi 1631733364 607 LASNDFLGGVRLGVGTGISNGEVV 630
Cdd:cd04022    77 GRRRSFLGRVRISGTSFVPPSEAV 100

C2 domain found in the Human KIAA0528 cDNA clone; The members of this CD are named after the Human KIAA0528 cDNA clone. All members here contain a single C2 repeat. No other information on this protein is currently known. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.

Pssm-ID: 176070 [Multi-domain] Cd Length: 110 Bit Score: 52.31 E-value: 2.85e-08

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 528 LQVWIKEAKNLTAA-KAGGTSDSFVKgyllpMRNKASKRKTPVMKKTLNPHYN-HTFVYNgVRLEDLQHMCLELTVWDRE 605
Cdd:cd08688     1 LKVRVVAARDLPVMdRSSDLTDAFVE-----VKFGSTTYKTDVVKKSLNPVWNsEWFRFE-VDDEELQDEPLQIRVMDHD 74

                          90
                  ....*....|.
gi 1631733364 606 PLASNDFLGGV 616
Cdd:cd08688    75 TYSANDAIGKV 85

C2 domain found in the Human chromosome 21 open reading frame 25 (C21orf25) protein; The members in this cd are named after the Human C21orf25 which contains a single C2 domain. Several other members contain a C1 domain downstream of the C2 domain. No other information on this protein is currently known. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.

Pssm-ID: 176060 [Multi-domain] Cd Length: 126 Bit Score: 52.37 E-value: 3.24e-08

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 387 DEAKKRSNPYVKTYLlpDKSRQgKRKTSIKRDTINPLYDETLRYEipeslLAQRT--LQFSVWHHGRFGRNTFLGEAEIQ 464
Cdd:cd08678    12 SEAAGSSNPYCVLEM--DEPPQ-KYQSSTQKNTSNPFWDEHFLFE-----LSPNSkeLLFEVYDNGKKSDSKFLGLAIVP 83

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*...
gi 1631733364 465 MDSWKLDKKLDHCLPLHGKISAESPTglpshKGELVVSLKYIPASKTP 512
Cdd:cd08678    84 FDELRKNPSGRQIFPLQGRPYEGDSV-----SGSITVEFLFMEPAELP 126

FYVE-related domain found in rabphilin-3A and similar proteins; Rabphilin-3A, also termed exophilin-1, is an effector protein that binds to the GTP-bound form of Rab3A, which is one of the most abundant Rab proteins in neurons and predominantly localized to synaptic vesicles. Rabphilin-3A is homologous to alpha-Rab3-interacting molecules (RIMs). It is a multi-domain protein containing an N-terminal Rab3A effector domain, a proline-rich linker region, and two tandem C2 domains. The effector domain binds specifically to the activated GTP-bound state of Rab3A and harbors a conserved FYVE zinc finger. The C2 domains are responsible for the binding of phosphatidylinositol-4,5-bisphosphate (PIP2) , a key player in the neurotransmitter release process. Thus, Rabphilin-3A has also been implicated in vesicle trafficking. The FYVE domain of Rabphilin-3A resembles a FYVE-related domain that is structurally similar to the canonical FYVE domains but lacks the three signature sequences: an N-terminal WxxD motif (x for any residue), the central basic R(R/K)HHCRxCG patch, and a C-terminal RVC motif.

Pssm-ID: 277301 Cd Length: 80 Bit Score: 51.11 E-value: 3.31e-08

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1631733364  63 CARCQESLGRLSPKTNTCRGCNHLVCRDCRIQESN---GTWRCKVCAKEIELKKATGDWFY 120
Cdd:cd15762     7 CILCGEQLGGAGSACVVCEDCKKNVCTKCGVQTNNrphSVWLCKICSEQREVWKRSGAWFF 67

C2 domain first repeat present in Synaptotagmin-like proteins; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 175990 [Multi-domain] Cd Length: 128 Bit Score: 52.43 E-value: 3.39e-08

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 526 GELQVWIKEAKNLTAA--KAGGTSDSFVKGYLlpmrnKASKRKTPVMKKTLNPHYNhtfVYNGVRLEDLQHMCLELTVWD 603
Cdd:cd04024     1 GVLRVHVVEAKDLAAKdrSGKGKSDPYAILSV-----GAQRFKTQTIPNTLNPKWN---YWCEFPIFSAQNQLLKLILWD 72

                          90       100
                  ....*....|....*....|....*.
gi 1631733364 604 REPLASNDFLGGVRLGVGTGISNGEV 629
Cdd:cd04024    73 KDRFAGKDYLGEFDIALEEVFADGKT 98

C2 domain second repeat present in Synaptotagmin 15; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. It is thought to be involved in the trafficking and exocytosis of secretory vesicles in non-neuronal tissues and is Ca2+ independent. Human synaptotagmin 15 has 2 alternatively spliced forms that encode proteins with different C-termini. The larger, SYT15a, contains a N-terminal TM region, a putative fatty-acylation site, and 2 tandem C terminal C2 domains. The smaller, SYT15b, lacks the C-terminal portion of the second C2 domain. Unlike most other synaptotagmins it is nearly absent in the brain and rather is found in the heart, lungs, skeletal muscle, and testis. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176054 [Multi-domain] Cd Length: 137 Bit Score: 52.72 E-value: 3.91e-08

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 497 GELVVSLKYIPASktpvggdrkkskggegGELQVWIKEAKNLTAAKAGGTsDSFVKGYLLPMRNKASKRKTPVMKKTLNP 576
Cdd:cd08409     2 GDIQISLTYNPTL----------------NRLTVVVLRARGLRQLDHAHT-SVYVKVSLMIHNKVVKTKKTEVVDGAASP 64

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1631733364 577 HYNHTFVYNgVRLEDLQHMCLELTVWDREPLASNDFLGGVRLGvgtgisngevvDWMDSTGEEVSLWQKMRQYP 650
Cdd:cd08409    65 SFNESFSFK-VTSRQLDTASLSLSVMQSGGVRKSKLLGRVVLG-----------PFMYARGKELEHWNDMLSKP 126

C2 domain found in Human protein Kibra; Kibra is thought to be a regulator of the Salvador (Sav)/Warts (Wts)/Hippo (Hpo) (SWH) signaling network, which limits tissue growth by inhibiting cell proliferation and promoting apoptosis. The core of the pathway consists of a MST and LATS family kinase cascade that ultimately phosphorylates and inactivates the YAP/Yorkie (Yki) transcription coactivator. The FERM domain proteins Merlin (Mer) and Expanded (Ex) are part of the upstream regulation controlling pathway mechanism. Kibra colocalizes and associates with Mer and Ex and is thought to transduce an extracellular signal via the SWH network. The apical scaffold machinery that contains Hpo, Wts, and Ex recruits Yki to the apical membrane facilitating its inhibitory phosphorlyation by Wts. Since Kibra associates with Ex and is apically located it is hypothesized that KIBRA is part of the scaffold, helps in the Hpo/Wts complex, and helps recruit Yki for inactivation that promotes SWH pathway activity. Kibra contains two amino-terminal WW domains, an internal C2-like domain, and a carboxy-terminal glutamic acid-rich stretch. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.

Pssm-ID: 176062 Cd Length: 124 Bit Score: 52.23 E-value: 4.17e-08

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 364 LKYEQQTQSLVVHV---KECHQLAYADEAKKrsnpYVKTYLLP---DKSRQGKRKTSIkrDTINPLYDETLRYEIPESLL 437
Cdd:cd08680     7 LRYDSGDSSLVISVeqlRNLSALSIPENSKV----YVRVALLPcssSTSCLFRTKALE--DQDKPVFNEVFRVPISSTKL 80

                          90       100
                  ....*....|....*....|....*...
gi 1631733364 438 AQRTLQFSVWHHGRFGRNTFLGEAEIQM 465
Cdd:cd08680    81 YQKTLQVDVCSVGPDQQEECLGGAQISL 108

C2 domain of the Regulator Of G-Protein Signaling (RGS) family; This CD contains members of the regulator of G-protein signaling (RGS) family. RGS is a GTPase activating protein which inhibits G-protein mediated signal transduction. The protein is largely cytosolic, but G-protein activation leads to translocation of this protein to the plasma membrane. A nuclear form of this protein has also been described, but its sequence has not been identified. There are multiple alternatively spliced transcript variants in this family with some members having additional domains (ex. PDZ and RGS) downstream of the C2 domain. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.

Pssm-ID: 176067 [Multi-domain] Cd Length: 119 Bit Score: 51.69 E-value: 4.88e-08

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 364 LKYEQQTQSLVVHVKECHQLAyadEAKKRS-NPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYEIPESLLAQRTL 442
Cdd:cd08685     5 LSIEGQNRKLTLHVLEAKGLR---STNSGTcNSYVKISLSPDKEVRFRQKTSTVPDSANPLFHETFSFDVNERDYQKRLL 81

                          90       100       110
                  ....*....|....*....|....*....|.
gi 1631733364 443 qFSVWHHGRFGRNT-FLGEAEIQMDSWKLDK 472
Cdd:cd08685    82 -VTVWNKLSKSRDSgLLGCMSFGVKSIVNQK 111

C2 domain first repeat present in Synaptotagmin-like protein 3; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. SHD of Slp (except for the Slp4-SHD) function as a specific Rab27A/B-binding domain. In addition to Slp, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. Little is known about the expression or localization of Slp3. The C2A domain of Slp3 is Ca2+ dependent. It has been demonstrated that Slp3 promotes dense-core vesicle exocytosis. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176038 [Multi-domain] Cd Length: 128 Bit Score: 49.83 E-value: 2.56e-07

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 528 LQVWIKEAKNLTAAKAGGTS-DSFVKGYLLPMRNKASKRKTPVMKKTLNPHYNHTFVYNgVRLEDLQHMCLELTVWDREP 606
Cdd:cd08392    17 LEITIKACRNLAYGDEKKKKcHPYVKVCLLPDKSHNSKRKTAVKKGTVNPVFNETLKYV-VEADLLSSRQLQVSVWHSRT 95

                          90
                  ....*....|
gi 1631733364 607 LASNDFLGGV 616
Cdd:cd08392    96 LKRRVFLGEV 105

C2 domain second repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and other proteins, such as Synaptotagmins, are implicated in facilitating the fusion process when cell membranes fuse together. There are six known human Ferlins: Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can lead to a wide range of diseases including muscular dystrophy (dysferlin), deafness (otoferlin), and infertility (fer-1, fertilization factor-1). Structurally they have 6 tandem C2 domains, designated as (C2A-C2F) and a single C-terminal transmembrane domain, though there is a new study that disputes this and claims that there are actually 7 tandem C2 domains with another C2 domain inserted between C2D and C2E. In a subset of them (Dysferlin, Myoferlin, and Fer1) there is an additional conserved domain called DysF. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.

Pssm-ID: 175978 [Multi-domain] Cd Length: 111 Bit Score: 49.50 E-value: 2.76e-07

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 375 VHVKECHQLAYADeakkrSNPYVKTYLLPDKsrqgkRKTSIKRDTINPLYDETLRYEI--PESLLAQRTLQFSVWHHGRF 452
Cdd:cd04011     8 VRVIEARQLVGGN-----IDPVVKVEVGGQK-----KYTSVKKGTNCPFYNEYFFFNFheSPDELFDKIIKISVYDSRSL 77

                          90
                  ....*....|.
gi 1631733364 453 GRNTFLGEAEI 463
Cdd:cd04011    78 RSDTLIGSFKL 88

C2A domain first repeat present in Synaptotagmins 15 and 17; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. It is thought to be involved in the trafficking and exocytosis of secretory vesicles in non-neuronal tissues and is Ca2+ independent. Human synaptotagmin 15 has 2 alternatively spliced forms that encode proteins with different C-termini. The larger, SYT15a, contains a N-terminal TM region, a putative fatty-acylation site, and 2 tandem C terminal C2 domains. The smaller, SYT15b, lacks the C-terminal portion of the second C2 domain. Unlike most other synaptotagmins it is nearly absent in the brain and rather is found in the heart, lungs, skeletal muscle, and testis. Synaptotagmin 17 is located in the brain, kidney, and prostate and is thought to be a peripheral membrane protein. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176036 [Multi-domain] Cd Length: 123 Bit Score: 49.56 E-value: 3.24e-07

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 528 LQVWIKEAKNLTA-AKAGGTSDSFVKGYLLP--MRNKASKrktpVMKKTLNPHYNHTFVYNgVRLEDLQHMCLELTVWDR 604
Cdd:cd08390    16 LTVSLIKARNLPPrTKDVAHCDPFVKVCLLPdeRRSLQSK----VKRKTQNPNFDETFVFQ-VSFKELQRRTLRLSVYDV 90

                          90       100       110
                  ....*....|....*....|....*....|
gi 1631733364 605 EPLASNDFLGGVRLGVGTGISNGEVVDWMD 634
Cdd:cd08390    91 DRFSRHCIIGHVLFPLKDLDLVKGGVVWRD 120

C2 domain second repeat present in RasA1 and RasA4; RasA1 and RasA4 are GAP1s (GTPase activating protein 1s ), Ras-specific GAP members, which suppresses Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. Both proteins contain two C2 domains, a Ras-GAP domain, a plextrin homology (PH)-like domain, and a Bruton's Tyrosine Kinase (BTK) zinc binding domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 175991 [Multi-domain] Cd Length: 123 Bit Score: 49.41 E-value: 3.33e-07

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 534 EAKNLTAAKAGGTSDSFVKgyllpMRNKASKRKTPVMKKTLNPHYNHTFVYngvRLEDLQHMCLELTVWDREPLASNDFL 613
Cdd:cd04025     8 EARDLAPKDRNGTSDPFVR-----VFYNGQTLETSVVKKSCYPRWNEVFEF---ELMEGADSPLSVEVWDWDLVSKNDFL 79

                          90
                  ....*....|....*....
gi 1631733364 614 GGVRLGVGTGISNGEVVDW 632
Cdd:cd04025    80 GKVVFSIQTLQQAKQEEGW 98

C2 domain first repeat in Munc13 (mammalian uncoordinated)-like proteins; C2-like domains are thought to be involved in phospholipid binding in a Ca2+ independent manner in both Unc13 and Munc13. Caenorabditis elegans Unc13 has a central domain with sequence similarity to PKC, which includes C1 and C2-related domains. Unc13 binds phorbol esters and DAG with high affinity in a phospholipid manner. Mutations in Unc13 results in abnormal neuronal connections and impairment in cholinergic neurotransmission in the nematode. Munc13 is the mammalian homolog which are expressed in the brain. There are 3 isoforms (Munc13-1, -2, -3) and are thought to play a role in neurotransmitter release and are hypothesized to be high-affinity receptors for phorbol esters. Unc13 and Munc13 contain both C1 and C2 domains. There are two C2 related domains present, one central and one at the carboxyl end. Munc13-1 contains a third C2-like domain. Munc13 interacts with syntaxin, synaptobrevin, and synaptotagmin suggesting a role for these as scaffolding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.

Pssm-ID: 176058 [Multi-domain] Cd Length: 153 Bit Score: 50.06 E-value: 3.92e-07

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 528 LQVWIKEAKNLTAAKAGGTSDSFVKGYLLPMRNKASKRK------------------------TPVMKKTLNPHYNHTFV 583
Cdd:cd08676    30 LKVTVIEAKGLLAKDVNGFSDPYCMLGIVPASRERNSEKskkrkshrkkavlkdtvpaksikvTEVKPQTLNPVWNETFR 109

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*
gi 1631733364 584 YNgvrLEDLQHMCLELTVWDREplasNDFLGGVRLGVGTGISNGE 628
Cdd:cd08676   110 FE---VEDVSNDQLHLDIWDHD----DDFLGCVNIPLKDLPSCGL 147

C2 domain second repeat present in RAS p21 protein activator 3 (RasA3); RasA3 are members of GTPase activating protein 1 (GAP1), a Ras-specific GAP, which suppresses Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. RasA3 contains an N-terminal C2 domain, a Ras-GAP domain, a plextrin homology (PH)-like domain, and a Bruton's Tyrosine Kinase (BTK) zinc binding domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 175977 [Multi-domain] Cd Length: 148 Bit Score: 49.70 E-value: 5.24e-07

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 528 LQVWIKEAKNLTAAkaGGTSDSFVKGYLLPMRNKASKRKTPVMKKTLNPHYNHTFVYNGVR------------LEDLQHM 595
Cdd:cd04010     2 LSVRVIECSDLALK--NGTCDPYASVTLIYSNKKQDTKRTKVKKKTNNPQFDEAFYFDVTIdsspekkqfempEEDAEKL 79

                          90       100
                  ....*....|....*....|...
gi 1631733364 596 CLELTVWDREPLASNDFLGGVRL 618
Cdd:cd04010    80 ELRVDLWHASMGGGDVFLGEVRI 102

C2 domain second repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); MCTPs are involved in Ca2+ signaling at the membrane. MCTP is composed of a variable N-terminal sequence, three C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.

Pssm-ID: 176022 [Multi-domain] Cd Length: 116 Bit Score: 48.41 E-value: 6.51e-07

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 534 EAKNLTAAKAGGTSDSFVKgylLPMRNKasKRKTPVMKKTLNPHYNHTFVYNgvrLEDLQHMCLELTVWDREPLASNDFL 613
Cdd:cd08376     8 EGKNLPPMDDNGLSDPYVK---FRLGNE--KYKSKVCSKTLNPQWLEQFDLH---LFDDQSQILEIEVWDKDTGKKDEFI 79


                  .
gi 1631733364 614 G 614
Cdd:cd08376    80 G 80

C2 domain second repeat present in Synaptotagmins 14 and 16; Synaptotagmin 14 and 16 are membrane-trafficking proteins in specific tissues outside the brain. Both of these contain C-terminal tandem C2 repeats, but only Synaptotagmin 14 has an N-terminal transmembrane domain and a putative fatty-acylation site. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium and this is indeed the case here. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176053 [Multi-domain] Cd Length: 138 Bit Score: 48.90 E-value: 8.03e-07

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 360 IAFSLKYEQQTQSLVVHV-KECH--QLAyadeAKKRSNPYVKTYLLpDKSRQ--GKRKTSIKRDTINPLYDETLRYEIPE 434
Cdd:cd08408     4 LLLGLEYNALTGRLSVEViKGSNfkNLA----MNKAPDTYVKLTLL-NSDGQeiSKSKTSIRRGQPDPEFKETFVFQVAL 78

                          90       100
                  ....*....|....*....|....*
gi 1631733364 435 SLLAQRTLQFSVWHHGRFGRNTFLG 459
Cdd:cd08408    79 FQLSEVTLMFSVYNKRKMKRKEMIG 103

C2 domain second repeat present in Synaptotagmin 15; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. It is thought to be involved in the trafficking and exocytosis of secretory vesicles in non-neuronal tissues and is Ca2+ independent. Human synaptotagmin 15 has 2 alternatively spliced forms that encode proteins with different C-termini. The larger, SYT15a, contains a N-terminal TM region, a putative fatty-acylation site, and 2 tandem C terminal C2 domains. The smaller, SYT15b, lacks the C-terminal portion of the second C2 domain. Unlike most other synaptotagmins it is nearly absent in the brain and rather is found in the heart, lungs, skeletal muscle, and testis. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176054 [Multi-domain] Cd Length: 137 Bit Score: 48.49 E-value: 8.95e-07

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 357 TGRIAFSLKYEQQTQSLVVHVKECHQLAYADEAKKrsNPYVKTYLLPDKSRQGKRKTSIKRDTINPLYDETLRYEIPESL 436
Cdd:cd08409     1 LGDIQISLTYNPTLNRLTVVVLRARGLRQLDHAHT--SVYVKVSLMIHNKVVKTKKTEVVDGAASPSFNESFSFKVTSRQ 78

                          90       100
                  ....*....|....*....|...
gi 1631733364 437 LAQRTLQFSVWHHGRFGRNTFLG 459
Cdd:cd08409    79 LDTASLSLSVMQSGGVRKSKLLG 101

C2 domain second repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); plant subset; MCTPs are involved in Ca2+ signaling at the membrane. Plant-MCTPs are composed of a variable N-terminal sequence, four C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.

Pssm-ID: 176024 [Multi-domain] Cd Length: 121 Bit Score: 48.08 E-value: 1.09e-06

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1631733364 564 KRKTPVMKKTLNPHYNHTFVYNGVRledLQHMCLELTVWDREPlASNDFLGGVRLGVG 621
Cdd:cd08378    29 KGSTKAIERTSNPEWNQVFAFSKDR---LQGSTLEVSVWDKDK-AKDDFLGGVCFDLS 82

C2 domain first and third repeat in Synaptotagmin-like proteins; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains either the first or third repeat in Synaptotagmin-like proteins with a type-I topology.

Pssm-ID: 176037 [Multi-domain] Cd Length: 121 Bit Score: 48.06 E-value: 1.11e-06

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 526 GELQVWIKEAKNLTAAKAG------GTSDSFVKgyllpMRNKASKRKTPVMKKTLNPHYNHTFvynGVRLEDLQHMCLEL 599
Cdd:cd08391     1 GVLRIHVIEAQDLVAKDKFvgglvkGKSDPYVI-----VRVGAQTFKSKVIKENLNPKWNEVY---EAVVDEVPGQELEI 72

                          90       100       110
                  ....*....|....*....|....*....|....
gi 1631733364 600 TVWDREPlASNDFLGGVRLGVGTGISNGEVVDWM 633
Cdd:cd08391    73 ELFDEDP-DKDDFLGRLSIDLGSVEKKGFIDEWL 105

C2 domain present in Intersectin; A single instance of the C2 domain is located C terminally in the intersectin protein. Intersectin functions as a scaffolding protein, providing a link between the actin cytoskeleton and the components of endocytosis and plays a role in signal transduction. In addition to C2, intersectin contains several additional domains including: Eps15 homology domains, SH3 domains, a RhoGEF domain, and a PH domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. The members here have topology I.

Pssm-ID: 176021 [Multi-domain] Cd Length: 136 Bit Score: 47.76 E-value: 1.73e-06

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 517 RKKSKGGegGELQVWIKEAKNLTAAKAGGTSDSFVKgyllpmRNKASKR-KTPVMKKTLNPHYNHT---FVYngvrleDL 592
Cdd:cd08375     8 SQRASGI--GRLMVVIVEGRDLKPCNSNGKSDPYCE------VSMGSQEhKTKVVSDTLNPKWNSSmqfFVK------DL 73

                          90       100
                  ....*....|....*....|..
gi 1631733364 593 QHMCLELTVWDREPLASNDFLG 614
Cdd:cd08375    74 EQDVLCITVFDRDFFSPDDFLG 95

C2 domain second repeat present in Synaptotagmins 14 and 16; Synaptotagmin 14 and 16 are membrane-trafficking proteins in specific tissues outside the brain. Both of these contain C-terminal tandem C2 repeats, but only Synaptotagmin 14 has an N-terminal transmembrane domain and a putative fatty-acylation site. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium and this is indeed the case here. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.

Pssm-ID: 176053 [Multi-domain] Cd Length: 138 Bit Score: 47.36 E-value: 2.83e-06

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 536 KNLTAAKAggtSDSFVKGYLL-PMRNKASKRKTPVMKKTLNPHYNHTFVYNgVRLEDLQHMCLELTVWDREPLASNDFLG 614
Cdd:cd08408    28 KNLAMNKA---PDTYVKLTLLnSDGQEISKSKTSIRRGQPDPEFKETFVFQ-VALFQLSEVTLMFSVYNKRKMKRKEMIG 103

                          90       100       110
                  ....*....|....*....|....*....|....*..
gi 1631733364 615 GVRLGVGTgisngevvdwmdSTGEEVSLWQKMRQYPG 651
Cdd:cd08408   104 WFSLGLNS------------SGEEEEEHWNEMKESKG 128

FYVE-related domain found in Slp homolog lacking C2 domains c (SlaC2-c) and similar proteins; SlaC2-c, also termed Rab effector MyRIP, or exophilin-8, or myosin-VIIa- and Rab-interacting protein, or synaptotagmin-like protein lacking C2 domains c, is a GTP-bound form of Rab27A-, myosin Va/VIIa-, and actin-binding protein mainly present on retinal melanosomes and secretory granules. It may play a role in insulin granule exocytosis. It is also involved in the control of isoproterenol (IPR)-induced amylase release from parotid acinar cells. SlaC2-c belongs to the Slp homolog lacking C2 domains (Slac2) family. It contains an N-terminal Slp homology domain (SHD), but lacks tandem C2 domains. The SHD consists of two conserved regions, designated SHD1 (Slp homology domain 1) and SHD2, which may function as protein interaction sites. The SHD1 and SHD2 of SlaC2-c are separated by a putative FYVE zinc finger, which resembles a FYVE-related domain that is structurally similar to the canonical FYVE domains but lacks the three signature sequences: an N-terminal WxxD motif (x for any residue), the central basic R(R/K)HHCRxCG patch, and a C-terminal RVC motif. Moreover, Slac2-c has a middle myosin-binding domain and a C-terminal actin-binding domain.

Pssm-ID: 277292 Cd Length: 49 Bit Score: 44.32 E-value: 3.53e-06

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*...
gi 1631733364  63 CARCQESLGRLSPKTNTCRGCNHLVCRDCRI-QESNGTWRCKVCAKEI 109
Cdd:cd15753     2 CMRCCSPFTFLFNRKRQCRDCKFNVCKSCASyDKKEKGWTCNVCQKQR 49

C2A domain first repeat present in Synaptotagmins 14 and 16; Synaptotagmin 14 and 16 are membrane-trafficking proteins in specific tissues outside the brain. Both of these contain C-terminal tandem C2 repeats, but only Synaptotagmin 14 has an N-terminal transmembrane domain and a putative fatty-acylation site. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium and this is indeed the case here. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176035 [Multi-domain] Cd Length: 124 Bit Score: 46.47 E-value: 3.62e-06

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 358 GRIAFSLKYEQQTQSLVVHVKECHQLAyadeAKKRSNP---YVKTYLLPDKsRQgKRKTSIKRDTiNPLYDETLRY-EIP 433
Cdd:cd08389     3 GDLDVAFEYDPSARKLTVTVIRAQDIP----TKDRGGAsswQVHLVLLPSK-KQ-RAKTKVQRGP-NPVFNETFTFsRVE 75

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*..
gi 1631733364 434 ESLLAQRTLQFSVWHHGRFGRNTFLGEAEIQMDSWKLDKKLDHCLPL 480
Cdd:cd08389    76 PEELNNMALRFRLYGVERMRKERLIGEKVVPLSQLNLEGETTVWLTL 122

C2 domain in Munc13 (mammalian uncoordinated) proteins; fungal group; C2-like domains are thought to be involved in phospholipid binding in a Ca2+ independent manner in both Unc13 and Munc13. Caenorabditis elegans Unc13 has a central domain with sequence similarity to PKC, which includes C1 and C2-related domains. Unc13 binds phorbol esters and DAG with high affinity in a phospholipid manner. Mutations in Unc13 results in abnormal neuronal connections and impairment in cholinergic neurotransmission in the nematode. Munc13 is the mammalian homolog which are expressed in the brain. There are 3 isoforms (Munc13-1, -2, -3) and are thought to play a role in neurotransmitter release and are hypothesized to be high-affinity receptors for phorbol esters. Unc13 and Munc13 contain both C1 and C2 domains. There are two C2 related domains present, one central and one at the carboxyl end. Munc13-1 contains a third C2-like domain. Munc13 interacts with syntaxin, synaptobrevin, and synaptotagmin suggesting a role for these as scaffolding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.

Pssm-ID: 176008 [Multi-domain] Cd Length: 126 Bit Score: 46.49 E-value: 4.30e-06

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 386 ADEAKKRSNPYVktyLLPDKSRQgKR--KTSIKRDTINPLYDETlrYEIPESLLAQRTLQFSVWHHGRFGRNTFLGEAEI 463
Cdd:cd04043    15 ADSSNGLSDPYV---TLVDTNGK-RRiaKTRTIYDTLNPRWDEE--FELEVPAGEPLWISATVWDRSFVGKHDLCGRASL 88


                  ....
gi 1631733364 464 QMDS 467
Cdd:cd04043    89 KLDP 92

C2 domain fourth repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are present in Tricalbin, a yeast homolog of Synaptotagmin, which is involved in membrane trafficking and sorting. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the fifth C2 repeat, C2E, and has a type-II topology.

Pssm-ID: 176005 [Multi-domain] Cd Length: 115 Bit Score: 44.87 E-value: 1.07e-05

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 528 LQVWIKEAKNLTAAKAGGTSDSFVKGYLlpmrNKASKRKTPVMKKTLNPHYNHTF-------VYNGVRLEdlqhmclelt 600
Cdd:cd04040     1 LTVDVISAENLPSADRNGKSDPFVKFYL----NGEKVFKTKTIKKTLNPVWNESFevpvpsrVRAVLKVE---------- 66

                          90
                  ....*....|....
gi 1631733364 601 VWDREPLASNDFLG 614
Cdd:cd04040    67 VYDWDRGGKDDLLG 80

C2 domain second repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and other proteins, such as Synaptotagmins, are implicated in facilitating the fusion process when cell membranes fuse together. There are six known human Ferlins: Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can lead to a wide range of diseases including muscular dystrophy (dysferlin), deafness (otoferlin), and infertility (fer-1, fertilization factor-1). Structurally they have 6 tandem C2 domains, designated as (C2A-C2F) and a single C-terminal transmembrane domain, though there is a new study that disputes this and claims that there are actually 7 tandem C2 domains with another C2 domain inserted between C2D and C2E. In a subset of them (Dysferlin, Myoferlin, and Fer1) there is an additional conserved domain called DysF. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.

Pssm-ID: 175978 [Multi-domain] Cd Length: 111 Bit Score: 44.87 E-value: 1.07e-05

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 529 QVWIKEAKNLtaakAGGTSDSFVKGYLLpmrnkASKRKTPVMKKTLNPHYNHTFVYN-GVRLEDLQHMCLELTVWDREPL 607
Cdd:cd04011     7 RVRVIEARQL----VGGNIDPVVKVEVG-----GQKKYTSVKKGTNCPFYNEYFFFNfHESPDELFDKIIKISVYDSRSL 77

                          90
                  ....*....|....*
gi 1631733364 608 ASNDFLGGVRLGVGT 622
Cdd:cd04011    78 RSDTLIGSFKLDVGT 92

C2 domain first repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); MCTPs are involved in Ca2+ signaling at the membrane. MCTP is composed of a variable N-terminal sequence, three C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-II topology.

Pssm-ID: 176007 [Multi-domain] Cd Length: 121 Bit Score: 44.96 E-value: 1.40e-05

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 528 LQVWIKEAKNLTAAKAGGTSDSFVKgylLPMRNKA-SKRKTpvMKKTLNPHYNHTFVyngVRLEDL-QHMCLEltVWDRE 605
Cdd:cd04042     2 LDIHLKEGRNLAARDRGGTSDPYVK---FKYGGKTvYKSKT--IYKNLNPVWDEKFT---LPIEDVtQPLYIK--VFDYD 71

                          90
                  ....*....|...
gi 1631733364 606 PLASNDFLGGVRL 618
Cdd:cd04042    72 RGLTDDFMGSAFV 84

C2 domain first repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); plant subset; MCTPs are involved in Ca2+ signaling at the membrane. Plant-MCTPs are composed of a variable N-terminal sequence, four C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-II topology.

Pssm-ID: 175989 [Multi-domain] Cd Length: 127 Bit Score: 44.64 E-value: 2.05e-05

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 373 LVVHVKECHQLAYADEAKKrSNPYVKTYLLPDKSRqgkrkTSIKRDTINPLYDETLRYEIPE-SLLAQRTLQFSVWHHGR 451
Cdd:cd04022     2 LVVEVVDAQDLMPKDGQGS-SSAYVELDFDGQKKR-----TRTKPKDLNPVWNEKLVFNVSDpSRLSNLVLEVYVYNDRR 75

                          90
                  ....*....|....*..
gi 1631733364 452 FGR-NTFLGEAEIQMDS 467
Cdd:cd04022    76 SGRrRSFLGRVRISGTS 92

C2 domain fourth repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are present in Tricalbin, a yeast homolog of Synaptotagmin, which is involved in membrane trafficking and sorting. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the fifth C2 repeat, C2E, and has a type-II topology.

Pssm-ID: 176005 [Multi-domain] Cd Length: 115 Bit Score: 43.71 E-value: 2.72e-05

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 373 LVVHVKECHQLAYADEAKKrSNPYVKTYLlpdksrQGKR--KTSIKRDTINPLYDETLRYEIPESLLAQrtLQFSVWHHG 450
Cdd:cd04040     1 LTVDVISAENLPSADRNGK-SDPFVKFYL------NGEKvfKTKTIKKTLNPVWNESFEVPVPSRVRAV--LKVEVYDWD 71

                          90       100       110
                  ....*....|....*....|....*....|...
gi 1631733364 451 RFGRNTFLGEAEIQMDSWKLDKKLDHCLPLHGK 483
Cdd:cd04040    72 RGGKDDLLGSAYIDLSDLEPEETTELTLPLDGQ 104

C2 domain present in Phosphoinositide-specific phospholipases C (PLC); PLCs are involved in the hydrolysis of phosphatidylinositol-4,5-bisphosphate (PIP2) to d-myo-inositol-1,4,5-trisphosphate (1,4,5-IP3) and sn-1,2-diacylglycerol (DAG). 1,4,5-IP3 and DAG are second messengers in eukaryotic signal transduction cascades. PLC is composed of a N-terminal PH domain followed by a series of EF hands, a catalytic TIM barrel and a C-terminal C2 domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-II topology.

Pssm-ID: 175974 [Multi-domain] Cd Length: 128 Bit Score: 43.68 E-value: 3.99e-05

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 387 DEAKKRSNPYVKTYL--LPDKSRQgKRKTSIKRD-TINPLYDETLRYEI--PEslLAqrTLQFSVWHHGRFGrNTFLGEA 461
Cdd:cd00275    19 GDKGSIVDPYVEVEIhgLPADDSA-KFKTKVVKNnGFNPVWNETFEFDVtvPE--LA--FLRFVVYDEDSGD-DDFLGQA 92


                  ....*.
gi 1631733364 462 EIQMDS 467
Cdd:cd00275    93 CLPLDS 98

C2 domain first repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); MCTPs are involved in Ca2+ signaling at the membrane. MCTP is composed of a variable N-terminal sequence, three C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-II topology.

Pssm-ID: 176007 [Multi-domain] Cd Length: 121 Bit Score: 43.42 E-value: 4.69e-05

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 372 SLVVHVKECHQLAYADEAKKrSNPYVKTYLlpdKSRQGKRKTSIKRDtINPLYDETLRYEIpESLLAqrTLQFSVWHHGR 451
Cdd:cd04042     1 QLDIHLKEGRNLAARDRGGT-SDPYVKFKY---GGKTVYKSKTIYKN-LNPVWDEKFTLPI-EDVTQ--PLYIKVFDYDR 72

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1631733364 452 FGRNTFLGEAEIQMDSWKLDKKLDHCLPLHGKISAEsptglPSHKGELVVSL 503
Cdd:cd04042    73 GLTDDFMGSAFVDLSTLELNKPTEVKLKLEDPNSDE-----DLGYISLVVTL 119

C2 domain of the Regulator Of G-Protein Signaling (RGS) family; This CD contains members of the regulator of G-protein signaling (RGS) family. RGS is a GTPase activating protein which inhibits G-protein mediated signal transduction. The protein is largely cytosolic, but G-protein activation leads to translocation of this protein to the plasma membrane. A nuclear form of this protein has also been described, but its sequence has not been identified. There are multiple alternatively spliced transcript variants in this family with some members having additional domains (ex. PDZ and RGS) downstream of the C2 domain. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.

Pssm-ID: 176067 [Multi-domain] Cd Length: 119 Bit Score: 42.44 E-value: 9.04e-05

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 515 GDRKKSKGGEGGELQVWIKEAKNLTAAKAGgTSDSFVKGYLLPMRNKASKRKTPVMKKTLNPHYNHTFVYNgVRLEDLQH 594
Cdd:cd08685     1 GQLKLSIEGQNRKLTLHVLEAKGLRSTNSG-TCNSYVKISLSPDKEVRFRQKTSTVPDSANPLFHETFSFD-VNERDYQK 78

                          90       100       110
                  ....*....|....*....|....*....|....*....
gi 1631733364 595 MCLeLTVWDREPLASND-FLGGVRLGVGTGISNGEVVDW 632
Cdd:cd08685    79 RLL-VTVWNKLSKSRDSgLLGCMSFGVKSIVNQKEISGW 116

FYVE domain like superfamily; FYVE domain is a 60-80 residue double zinc finger motif-containing module named after the four proteins, Fab1, YOTB, Vac1, and EEA1. The canonical FYVE domains are distinguished from other zinc fingers by three signature sequences: an N-terminal WxxD motif (x for any residue), the central basic R(R/K)HHCRxCG patch, and a C-terminal RVC motif, which form a compact phosphatidylinositol 3-phosphate (PtdIns3P, also termed PI3P)-binding site. They are found in many membrane trafficking regulators, including EEA1, Hrs, Vac1p, Vps27p, and FENS-1, which locate to early endosomes, specifically bind PtdIns3P, and play important roles in vesicular traffic and in signal transduction. Some proteins, such as rabphilin-3A and alpha-Rab3-interacting molecules (RIMs), are also involved in membrane trafficking and bind to members of the Rab subfamily of GTP hydrolases. However, they contain FYVE-related domains that are structurally similar to the canonical FYVE domains but lack the three signature sequences. At this point, they may not bind to phosphoinositides. In addition, this superfamily also contains the third group of proteins, caspase-associated ring proteins CARP1 and CARP2. They do not localize to membranes in the cell and are involved in the negative regulation of apoptosis, specifically targeting two initiator caspases, caspase 8 and caspase 10, which are distinguished from other FYVE-type proteins. Moreover, these proteins have an altered sequence in the basic ligand binding patch and lack the WxxD motif that is conserved only in phosphoinositide binding FYVE domains. Thus they constitute a family of unique FYVE-type domains called FYVE-like domains. The FYVE domain is structurally similar to the RING domain and the PHD finger. This superfamily also includes ADDz zinc finger domain, which is a PHD-like zinc finger motif that contains two parts, a C2-C2 and a PHD-like zinc finger.

Pssm-ID: 277249 [Multi-domain] Cd Length: 52 Bit Score: 40.59 E-value: 9.34e-05

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1631733364  62 TCARCQESLGRLSPKtNTCRGCNHLVCRDC--------RIQESNGTWRCKVCA 106
Cdd:cd00065     1 RCMLCGKKFSLFRRR-HHCRRCGRVFCSKCsskklplpSFGSGKPVRVCDSCY 52

FYVE-related domain found in rabphilin-3A, Rab effector Noc2, and similar proteins; This family includes rabphilin-3A and Rab effector Noc2. Rabphilin-3A, also termed exophilin-1, is an effector protein that binds to the GTP-bound form of Rab3A, which is one of the most abundant Rab proteins in neurons and predominantly localized to synaptic vesicles. Rabphilin-3A is homologous to alpha-Rab3-interacting molecules (RIMs). It is a multi-domain protein containing an N-terminal Rab3A effector domain, a proline-rich linker region, and two tandem C2 domains. The effector domain binds specifically to the activated GTP-bound state of Rab3A and harbors a conserved FYVE zinc finger. The C2 domains are responsible for the binding of phosphatidylinositol-4,5-bisphosphate (PIP2) , a key player in the neurotransmitter release process. Thus, Rabphilin-3A has also been implicated in vesicle trafficking. Rab effector Noc2, also termed No C2 domains protein, or rabphilin-3A-like protein (RPH3AL), is a Rab3 effector that mediates the regulation of secretory vesicle exocytosis in neurons and certain endocrine cells. It also functions as a Rab27 effector and is involved in isoproterenol (IPR)-stimulated amylase release from acinar cells. Noc2 contains an N-terminal Rab3A effector domain which only harbors a conserved FYVE zinc finger. The FYVE domains of Rabphilin-3A and Noc2 resemble a FYVE-related domain that is structurally similar to the canonical FYVE domains but lacks the three signature sequences: an N-terminal WxxD motif (x for any residue), the central basic R(R/K)HHCRxCG patch, and a C-terminal RVC motif.

Pssm-ID: 277285 Cd Length: 55 Bit Score: 40.32 E-value: 9.97e-05

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*....
gi 1631733364  62 TCARCQESLGRLSPKTNTCRGCNHLVCRDCRIQESNG----TWRCKVCA 106
Cdd:cd15746     6 QCILCGDEFGLLGASPVLCKDCRKAVCTKCGVETTNSnkqpIWLCKICS 54

Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];

Pssm-ID: 227371 [Multi-domain] Cd Length: 1227 Bit Score: 44.36 E-value: 2.46e-04

                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 1631733364  526 GELQVWIKEAKNLTAAKAGGTSDSFVKGYLlpmrNKASKRKTPVMKKTLNPHYNHTFV 583
Cdd:COG5038   1040 GYLTIMLRSGENLPSSDENGYSDPFVKLFL----NEKSVYKTKVVKKTLNPVWNEEFT 1093

C2 domain fourth repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and other proteins, such as Synaptotagmins, are implicated in facilitating the fusion process when cell membranes fuse together. There are six known human Ferlins: Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can lead to a wide range of diseases including muscular dystrophy (dysferlin), deafness (otoferlin), and infertility (fer-1, fertilization factor-1). Structurally they have 6 tandem C2 domains, designated as (C2A-C2F) and a single C-terminal transmembrane domain, though there is a new study that disputes this and claims that there are actually 7 tandem C2 domains with another C2 domain inserted between C2D and C2E. In a subset of them (Dysferlin, Myoferlin, and Fer1) there is an additional conserved domain called DysF. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the fourth C2 repeat, C2D, and has a type-II topology.

Pssm-ID: 175984 [Multi-domain] Cd Length: 135 Bit Score: 41.37 E-value: 2.52e-04

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 527 ELQVWIKEAKNLTAAKAGGTSDSFVKGYLLpmrNKAskRKTPVMKKTLNPHYNHTFVYNGVRL-EDLQHM-------CLE 598
Cdd:cd04017     2 QLRAYIYQARDLLAADKSGLSDPFARVSFL---NQS--QETEVIKETLSPTWDQTLIFDEVELyGSPEEIaqnpplvVVE 76

                          90
                  ....*....|....*.
gi 1631733364 599 LtvWDREPLASNDFLG 614
Cdd:cd04017    77 L--FDQDSVGKDEFLG 90

C2 domain present in E3 ubiquitin ligase; E3 ubiquitin ligase is part of the ubiquitylation mechanism responsible for controlling surface expression of membrane proteins. The sequential action of several enzymes are involved: ubiquitin-activating enzyme E1, ubiquitin-conjugating enzyme E2, and ubiquitin-protein ligase E3 which is responsible for substrate recognition and promoting the transfer of ubiquitin to the target protein. E3 ubiquitin ligase is composed of an N-terminal C2 domain, 4 WW domains, and a HECTc domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.

Pssm-ID: 175988 [Multi-domain] Cd Length: 125 Bit Score: 41.11 E-value: 2.52e-04

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1631733364 391 KRSNPYVKtyLLPDKsrQGKRKTSIKRDTINPLYDETLryeipeSLLA--QRTLQFSVWHHGRFGRNTFLGEAEIQM 465
Cdd:cd04021    20 FKPDPYVE--VTVDG--QPPKKTEVSKKTSNPKWNEHF------TVLVtpQSTLEFKVWSHHTLKADVLLGEASLDL 86

C2 domain first repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are present in Tricalbin, a yeast homolog of Synaptotagmin, which is involved in membrane trafficking and sorting. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-II topology.

Pssm-ID: 176009 [Multi-domain] Cd Length: 124 Bit Score: 41.39 E-value: 2.58e-04

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 373 LVVHVKECHQLAYADEAKKRSNPYVKTyllpdkSRQGKR---KTSIKRDTINPLYDETLRyeIPESLLAQRtLQFSVWHH 449
Cdd:cd04044     4 LAVTIKSARGLKGSDIIGGTVDPYVTF------SISNRRelaRTKVKKDTSNPVWNETKY--ILVNSLTEP-LNLTVYDF 74

                          90       100       110       120       130       140
                  ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1631733364 450 GRFGRNTFLGEAEIQMDSWKLDKKLDHC---LPLHGKIsaesptglpshKGELVVSLKYIP 507
Cdd:cd04044    75 NDKRKDKLIGTAEFDLSSLLQNPEQENLtknLLRNGKP-----------VGELNYDLRFFP 124

C2 domain in Munc13 (mammalian uncoordinated) proteins; fungal group; C2-like domains are thought to be involved in phospholipid binding in a Ca2+ independent manner in both Unc13 and Munc13. Caenorabditis elegans Unc13 has a central domain with sequence similarity to PKC, which includes C1 and C2-related domains. Unc13 binds phorbol esters and DAG with high affinity in a phospholipid manner. Mutations in Unc13 results in abnormal neuronal connections and impairment in cholinergic neurotransmission in the nematode. Munc13 is the mammalian homolog which are expressed in the brain. There are 3 isoforms (Munc13-1, -2, -3) and are thought to play a role in neurotransmitter release and are hypothesized to be high-affinity receptors for phorbol esters. Unc13 and Munc13 contain both C1 and C2 domains. There are two C2 related domains present, one central and one at the carboxyl end. Munc13-1 contains a third C2-like domain. Munc13 interacts with syntaxin, synaptobrevin, and synaptotagmin suggesting a role for these as scaffolding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.

Pssm-ID: 176008 [Multi-domain] Cd Length: 126 Bit Score: 41.09 E-value: 3.20e-04

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 532 IKEAKNLTAAKAGGTSDSFVKgyllpMRNKASKR---KTPVMKKTLNPHYNHTFVyngVRLEDLQHMCLELTVWDREPLA 608
Cdd:cd04043     7 IVRAENLKADSSNGLSDPYVT-----LVDTNGKRriaKTRTIYDTLNPRWDEEFE---LEVPAGEPLWISATVWDRSFVG 78


                  ....*.
gi 1631733364 609 SNDFLG 614
Cdd:cd04043    79 KHDLCG 84

FYVE-related domain found in Slp homolog lacking C2 domains a (SlaC2-a) and similar proteins; SlaC2-a, also termed melanophilin, or exophilin-3, is a GTP-bound form of Rab27A-, myosin Va-, and actin-binding protein present on melanosomes. It is involved in the control of transferring of melanosomes from microtubules to actin filaments. It also functions as a melanocyte type myosin Va (McM5) binding partner and directly activates the actin-activated ATPase activity of McM5 through forming a tripartite protein complex with Rab27A and an actin-based motor myosin Va. SlaC2-a belongs to the Slp homolog lacking C2 domains (Slac2) family. It contains an N-terminal Slp homology domain (SHD), but lacks tandem C2 domains. The SHD consists of two conserved regions, designated SHD1 (Slp homology domain 1) and SHD2, which may function as protein interaction sites. The SHD1 and SHD2 of SlaC2-a are separated by a putative FYVE zinc finger, which resembles a FYVE-related domain that is structurally similar to the canonical FYVE domains but lacks the three signature sequences: an N-terminal WxxD motif (x for any residue), the central basic R(R/K)HHCRxCG patch, and a C-terminal RVC motif. Moreover, Slac2-a has a middle myosin-binding domain and a C-terminal actin-binding domain.

Pssm-ID: 277291 Cd Length: 76 Bit Score: 39.78 E-value: 3.22e-04

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1631733364  63 CARCQESLGRLSPKTNTCRGCNHLVCRDC-RIQESNGTWRCKVCAKEIELKKATGDWFYDQKVNRFAyRTGS 133
Cdd:cd15752     3 CARCLQPFQFLLNSGRQCLDCGLRTCKSCsRYHPEEQGWVCDPCHLARVVKIGSLEWYYNHVRARFK-RFGS 73

C2 domain present in Intersectin; A single instance of the C2 domain is located C terminally in the intersectin protein. Intersectin functions as a scaffolding protein, providing a link between the actin cytoskeleton and the components of endocytosis and plays a role in signal transduction. In addition to C2, intersectin contains several additional domains including: Eps15 homology domains, SH3 domains, a RhoGEF domain, and a PH domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. The members here have topology I.

Pssm-ID: 176021 [Multi-domain] Cd Length: 136 Bit Score: 40.45 E-value: 5.29e-04

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 373 LVVHVKECHQLAYADeAKKRSNPYVKTYLlpdksRQGKRKTSIKRDTINPLYDETLRYEIPEslLAQRTLQFSVWHHGRF 452
Cdd:cd08375    17 LMVVIVEGRDLKPCN-SNGKSDPYCEVSM-----GSQEHKTKVVSDTLNPKWNSSMQFFVKD--LEQDVLCITVFDRDFF 88

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1631733364 453 GRNTFLGEAEIQMDSWKLDKKlDHCLPLHGKISA-ESPTglpshkGELVVSL 503
Cdd:cd08375    89 SPDDFLGRTEIRVADILKETK-ESKGPITKRLLLhEVPT------GEVVVKL 133

FYVE-related domain found in Rab effector Noc2 and similar proteins; Rab effector Noc2, also termed No C2 domains protein, or rabphilin-3A-like protein (RPH3AL), is a Rab3 effector that mediates the regulation of secretory vesicle exocytosis in neurons and certain endocrine cells. It also functions as a Rab27 effector and is involved in isoproterenol (IPR)-stimulated amylase release from acinar cells. Noc2 contains an N-terminal Rab3A effector domain which harbors a conserved zinc finger, but lacks tandem C2 domains. The FYVE domain of Noc2 resembles a FYVE-related domain that is structurally similar to the canonical FYVE domains but lacks the three signature sequences: an N-terminal WxxD motif (x for any residue), the central basic R(R/K)HHCRxCG patch, and a C-terminal RVC motif.

Pssm-ID: 277302 Cd Length: 64 Bit Score: 38.41 E-value: 6.28e-04

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1631733364  63 CARCQESLGRLSPKTNTCRGCNHLVCRDCRIQESNGT----WRCKVCAKEIELKK 113
Cdd:cd15763    10 CLLCGELLGFLGSSSVFCQDCRKKVCTKCGIETSGSQkrplWLCKICSEQREVWK 64

C2 domain present in Soybean genes Regulated by Cold 2 (SRC2)-like proteins; SRC2 production is a response to pathogen infiltration. The initial response of increased Ca2+ concentrations are coupled to downstream signal transduction pathways via calcium binding proteins. SRC2 contains a single C2 domain which localizes to the plasma membrane and is involved in Ca2+ dependent protein binding. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.

Pssm-ID: 176016 [Multi-domain] Cd Length: 125 Bit Score: 39.91 E-value: 6.62e-04

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1631733364 392 RSNPYVKTYLLPDKsrqgKRKTSIKRDT-INPLYDETLRYEIPESLLAQ--RTLQFSVWHHGRFGRNTFLGEAEIQM 465
Cdd:cd04051    20 KMKVYAVVWIDPSH----KQSTPVDRDGgTNPTWNETLRFPLDERLLQQgrLALTIEVYCERPSLGDKLIGEVRVPL 92

C2 domain present in Arf GTPase Activating Proteins (GAP); ArfGAP is a GTPase activating protein which regulates the ADP ribosylation factor Arf, a member of the Ras superfamily of GTP-binding proteins. The GTP-bound form of Arf is involved in Golgi morphology and is involved in recruiting coat proteins. ArfGAP is responsible for the GDP-bound form of Arf which is necessary for uncoating the membrane and allowing the Golgi to fuse with an acceptor compartment. These proteins contain an N-terminal ArfGAP domain containing the characteristic zinc finger motif (Cys-x2-Cys-x(16,17)-x2-Cys) and C-terminal C2 domain. C2 domains were first identified in Protein Kinase C (PKC). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.

Pssm-ID: 176003 [Multi-domain] Cd Length: 145 Bit Score: 40.39 E-value: 6.78e-04

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 373 LVVHVKECHQLAYADeaKKRSNPYVKTYLlpdksRQGKRKTSIKRDTINPLYDETLRYEIPESLLAqrtLQFSVWHHGRF 452
Cdd:cd04038     4 LKVRVVRGTNLAVRD--FTSSDPYVVLTL-----GNQKVKTRVIKKNLNPVWNEELTLSVPNPMAP---LKLEVFDKDTF 73

                          90
                  ....*....|.
gi 1631733364 453 GRNTFLGEAEI 463
Cdd:cd04038    74 SKDDSMGEAEI 84

C2 domain found in Rab11-family interacting proteins (FIP) class I; Rab GTPases recruit various effector proteins to organelles and vesicles. Rab11-family interacting proteins (FIPs) are involved in mediating the role of Rab11. FIPs can be divided into three classes: class I FIPs (Rip11a, Rip11b, RCP, and FIP2) which contain a C2 domain after N-terminus of the protein, class II FIPs (FIP3 and FIP4) which contain two EF-hands and a proline rich region, and class III FIPs (FIP1) which exhibits no homology to known protein domains. All FIP proteins contain a highly conserved, 20-amino acid motif at the C-terminus of the protein, known as Rab11/25 binding domain (RBD). Class I FIPs are thought to bind to endocytic membranes via their C2 domain, which interacts directly with phospholipids. Class II FIPs do not have any membrane binding domains leaving much to speculate about the mechanism involving FIP3 and FIP4 interactions with endocytic membranes. The members in this CD are class I FIPs. The exact function of the Rab11 and FIP interaction is unknown, but there is speculation that it involves the role of forming a targeting complex that recruits a group of proteins involved in membrane transport to organelles. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.

Pssm-ID: 176064 [Multi-domain] Cd Length: 126 Bit Score: 40.13 E-value: 7.49e-04

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 529 QVWIKEAKNLTAAKAGGTSDSFVKgyllpMRNKASKRKTPVMKKTLNPHYNH--TFVYNGVRLEDLQHMCLELTVWDREP 606
Cdd:cd08682     2 QVTVLQARGLLCKGKSGTNDAYVI-----IQLGKEKYSTSVKEKTTSPVWKEecSFELPGLLSGNGNRATLQLTVMHRNL 76

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*
gi 1631733364 607 LASNDFLGGVRLgvgtgisngEVVDWMDSTGEEVSLWQKMRQYPG 651
Cdd:cd08682    77 LGLDKFLGQVSI---------PLNDLDEDKGRRRTRWFKLESKPG 112

C2 domain second repeat contained in Rab3-interacting molecule (RIM) proteins; RIMs are believed to organize specialized sites of the plasma membrane called active zones. They also play a role in controlling neurotransmitter release, plasticity processes, as well as memory and learning. RIM contains an N-terminal zinc finger domain, a PDZ domain, and two C-terminal C2 domains (C2A, C2B). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology and do not bind Ca2+.

Pssm-ID: 175994 [Multi-domain] Cd Length: 146 Bit Score: 39.68 E-value: 1.20e-03

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 511 TPVGGDRKKSKGGEGGELQVWIKEAKNLTAaKAGG--TSDSFVKGYLLPMRNKASKRKTPVMKKTLNPHYNHTFVYNgvr 588
Cdd:cd04028    14 SPSMGDIQLGLYDKKGQLEVEVIRARGLVQ-KPGSkvLPAPYVKVYLLEGKKCIAKKKTKIARKTLDPLYQQQLVFD--- 89

                          90
                  ....*....|....
gi 1631733364 589 lEDLQHMCLELTVW 602
Cdd:cd04028    90 -VSPTGKTLQVIVW 102

C2 domain fifth repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and other proteins, such as Synaptotagmins, are implicated in facilitating the fusion process when cell membranes fuse together. There are six known human Ferlins: Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can lead to a wide range of diseases including muscular dystrophy (dysferlin), deafness (otoferlin), and infertility (fer-1, fertilization factor-1). Structurally they have 6 tandem C2 domains, designated as (C2A-C2F) and a single C-terminal transmembrane domain, though there is a new study that disputes this and claims that there are actually 7 tandem C2 domains with another C2 domain inserted between C2D and C2E. In a subset of them (Dysferlin, Myoferlin, and Fer1) there is an additional conserved domain called DysF. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the fifth C2 repeat, C2E, and has a type-II topology.

Pssm-ID: 176002 [Multi-domain] Cd Length: 124 Bit Score: 39.07 E-value: 1.47e-03

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 375 VHVKECHQLAYADEAKKrSNPYVKTYLLpdKSRQGKRKTSIKrDTINPLYDEtlRYEIPESLLAQRTLQFSVWHHGRFGR 454
Cdd:cd04037     4 VYVVRARNLQPKDPNGK-SDPYLKIKLG--KKKINDRDNYIP-NTLNPVFGK--MFELEATLPGNSILKISVMDYDLLGS 77


                  ....*....
gi 1631733364 455 NTFLGEAEI 463
Cdd:cd04037    78 DDLIGETVI 86

C2 domain present in Phosphatidylserine decarboxylase (PSD); PSD is involved in the biosynthesis of aminophospholipid by converting phosphatidylserine (PtdSer) to phosphatidylethanolamine (PtdEtn). There is a single C2 domain present and it is thought to confer PtdSer binding motif that is common to PKC and synaptotagmin. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.

Pssm-ID: 176004 [Multi-domain] Cd Length: 108 Bit Score: 38.39 E-value: 1.64e-03

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 1631733364 566 KTPVMKKTLNPHYNHTFVYNGVRLEdlQHMCLELTVWDREPLASNDFLGGVRLGV 620
Cdd:cd04039    40 RTSWRRHTLNPVFNERLAFEVYPHE--KNFDIQFKVLDKDKFSFNDYVATGSLSV 92

C2 domain of Perforin; Perforin contains a single copy of a C2 domain in its C-terminus and plays a role in lymphocyte-mediated cytotoxicity. Mutations in perforin leads to familial hemophagocytic lymphohistiocytosis type 2. The function of perforin is calcium dependent and the C2 domain is thought to confer this binding to target cell membranes. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.

Pssm-ID: 175998 [Multi-domain] Cd Length: 127 Bit Score: 38.78 E-value: 1.66e-03

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 526 GELQVWIKEAKNLTAakaggtsDSFVK--GYLLPMRNKASKRkTPVMKKTLNPHYNHTFVYNGVRLEDLQHMCLEltVWD 603
Cdd:cd04032    28 ATLTVTVLRATGLWG-------DYFTStdGYVKVFFGGQEKR-TEVIWNNNNPRWNATFDFGSVELSPGGKLRFE--VWD 97

                          90
                  ....*....|.
gi 1631733364 604 REPLASNDFLG 614
Cdd:cd04032    98 RDNGWDDDLLG 108

C2A domain first repeat present in Synaptotagmins 14 and 16; Synaptotagmin 14 and 16 are membrane-trafficking proteins in specific tissues outside the brain. Both of these contain C-terminal tandem C2 repeats, but only Synaptotagmin 14 has an N-terminal transmembrane domain and a putative fatty-acylation site. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium and this is indeed the case here. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.

Pssm-ID: 176035 [Multi-domain] Cd Length: 124 Bit Score: 38.38 E-value: 2.53e-03

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 497 GELVVSLKYIPASKtpvggdrkkskggeggELQVWIKEAKNLTAAKAGGTSDSFVKGYLLPmrNKASKRKTPVMKKTlNP 576
Cdd:cd08389     3 GDLDVAFEYDPSAR----------------KLTVTVIRAQDIPTKDRGGASSWQVHLVLLP--SKKQRAKTKVQRGP-NP 63

                          90       100
                  ....*....|....*....|...
gi 1631733364 577 HYNHTFVYNGVRLEDLQHMCLEL 599
Cdd:cd08389    64 VFNETFTFSRVEPEELNNMALRF 86

FYVE-related domain found in protein bassoon and piccolo; This family includes protein bassoon and piccolo. Protein bassoon, also termed zinc finger protein 231, is a core component of the presynaptic cytomatrix. It is a vertebrate-specific active zone scaffolding protein that plays a key role in structural organization and functional regulation of presynaptic release sites. Bassoon may modulate synaptic transmission efficiency by binding to presynaptic P/Q-type voltage-dependent calcium channel (VDCC) complexes and modify the channel function. As one of the most highly phosphorylated synaptic proteins, bassoon can interact with the small ubiquitous adaptor protein 14-3-3 in a phosphorylation-dependent manner, which modulates its anchoring to the presynaptic cytomatrix. Protein piccolo, also termed aczonin, is a neuron-specific presynaptic active zone scaffolding protein that mainly interacts with a detergent-resistant cytoskeletal-like subcellular fraction and is involved in the organization of the interplay between neurotransmitter vesicles, the cytoskeleton, and the plasma membrane at synaptic active zones. It binds profilin, an actin-binding protein implicated in actin cytoskeletal dynamics. It also functions as a presynaptic low-affinity Ca2+ sensor and has been implicated in Ca2+ regulation of neurotransmitter release. Both bassoon and piccolo contain two N-terminal FYVE zinc fingers, a PDZ domain and two C-terminal C2 domains. Their FYVE domain resembles a FYVE-related domain that is structurally similar to the canonical FYVE domains but lacks the three signature sequences: an N-terminal WxxD motif (x for any residue), the central basic R(R/K)HHCRxCG patch, and a C-terminal RVC motif.

Pssm-ID: 277290 [Multi-domain] Cd Length: 62 Bit Score: 36.66 E-value: 2.58e-03

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1631733364  63 CARCQESLGRLSPKT-NTCRGCNHLVCRDC-----RIQESNGTWRCKVCAK 107
Cdd:cd15751     6 CGTSELPLGSKSPPNyNTCTDCKNRVCNQCgfnstPPVTKVKEWLCLNCQK 56

C2 domain found in 5' repressor element under dual repression binding protein-1 (Freud-1); Freud-1 is a novel calcium-regulated repressor that negatively regulates basal 5-HT1A receptor expression in neurons. It may also play a role in the altered regulation of 5-HT1A receptors associated with anxiety or major depression. Freud-1 contains two DM-14 basic repeats, a helix-loop-helix DNA binding domain, and a C2 domain. The Freud-1 C2 domain is thought to be calcium insensitive and it lacks several acidic residues that mediate calcium binding of the PKC C2 domain. In addition, it contains a poly-basic insert that is not present in calcium-dependent C2 domains and may function as a nuclear localization signal. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-II topology.

Pssm-ID: 176072 [Multi-domain] Cd Length: 155 Bit Score: 38.44 E-value: 3.78e-03

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 396 YVK-TYLLPDKSRQgKRKTSIKRDTINPLYDETLRYEIPESLLA-QRT-----LQFSVWHHGRFGR-NTFLGEAEIQMDs 467
Cdd:cd08690    28 YVKfEFPYPNEEPQ-SGKTSTIKDTNSPEYNESFKLNINRKHRSfQRVfkrhgLKFEVYHKGGFLRsDKLLGTAQVKLE- 105


                  ....*.
gi 1631733364 468 wKLDKK 473
Cdd:cd08690   106 -PLETK 110

RING finger, HC subclass, found in RING finger protein 222 (RNF222) and similar proteins; RNF222 is an uncharacterized C3HC4-type RING-HC finger-containing protein. It may function as an E3 ubiquitin-protein ligase.

Pssm-ID: 438226 [Multi-domain] Cd Length: 50 Bit Score: 35.07 E-value: 6.40e-03

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 1631733364  62 TCARCQESLgRLSPKTNTCRgcnHLVCRDCRI-QESNGTWRCKVCAKEIELKK 113
Cdd:cd16564     2 ECPVCYEDF-DDAPRILSCG---HSFCEDCLVkQLVSMTISCPICRRVTFISK 50

C2 domain first and third repeat in Synaptotagmin-like proteins; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains either the first or third repeat in Synaptotagmin-like proteins with a type-I topology.

Pssm-ID: 176037 [Multi-domain] Cd Length: 121 Bit Score: 36.89 E-value: 6.93e-03

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                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 373 LVVHVKECHQLAYADEA-----KKRSNPYVKTyllpdksRQGKR--KTSIKRDTINPLYDETlrYEIPESLLAQRTLQFS 445
Cdd:cd08391     3 LRIHVIEAQDLVAKDKFvgglvKGKSDPYVIV-------RVGAQtfKSKVIKENLNPKWNEV--YEAVVDEVPGQELEIE 73

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|...
gi 1631733364 446 VWHHGRfGRNTFLGEAEIQMDSWKLDKKLDHCLPL----HGKI 484
Cdd:cd08391    74 LFDEDP-DKDDFLGRLSIDLGSVEKKGFIDEWLPLedvkSGRL 115

Protein present in Fab1, YOTB, Vac1, and EEA1; The FYVE zinc finger is named after four proteins where it was first found: Fab1, YOTB/ZK632.12, Vac1, and EEA1. The FYVE finger has been shown to bind two Zn2+ ions. The FYVE finger has eight potential zinc coordinating cysteine positions. The FYVE finger is structurally related to the PHD finger and the RING finger. Many members of this family also include two histidines in a motif R+HHC+XCG, where + represents a charged residue and X any residue. The FYVE finger functions in the membrane recruitment of cytosolic proteins by binding to phosphatidylinositol 3-phosphate (PI3P), which is prominent on endosomes. The R+HHC+XCG motif is critical for PI3P binding.

Pssm-ID: 214499 [Multi-domain] Cd Length: 68 Bit Score: 35.49 E-value: 7.94e-03

                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*...
gi 1631733364   63 CARCQESLGRLSPKTNtCRGCNHLVCRDC-----RIQESNGTWRCKVC 105
Cdd:smart00064  13 CMGCGKEFNLTKRRHH-CRNCGRIFCSKCsskkaPLPKLGIERPVRVC 59

C2 domain found in the Human KIAA0528 cDNA clone; The members of this CD are named after the Human KIAA0528 cDNA clone. All members here contain a single C2 repeat. No other information on this protein is currently known. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.

Pssm-ID: 176070 [Multi-domain] Cd Length: 110 Bit Score: 36.52 E-value: 8.13e-03

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1631733364 373 LVVHVKECHQLAYADEAKKRSNPYVKTYLLPDKSrqgkrKTSIKRDTINPLY-DETLRYEIPESLLAQRTLQFSVWHHGR 451
Cdd:cd08688     1 LKVRVVAARDLPVMDRSSDLTDAFVEVKFGSTTY-----KTDVVKKSLNPVWnSEWFRFEVDDEELQDEPLQIRVMDHDT 75


                  ....*...
gi 1631733364 452 FGRNTFLG 459
Cdd:cd08688    76 YSANDAIG 83