E3 ubiquitin-protein ligase SMURF1 isoform X1 [Homo sapiens]
Protein Classification
WW domain-containing protein( domain architecture ID 10871374)
WW domain-containing protein; the WW domain mediates protein-protein interaction via proline-rich motifs, such as PPxY
List of domain hits
| Name | Accession | Description | Interval | E-value | ||||||
| HECTc | cd00078 | HECT domain; C-terminal catalytic domain of a subclass of Ubiquitin-protein ligase (E3). It ... |
399-751 | 3.04e-176 | ||||||
HECT domain; C-terminal catalytic domain of a subclass of Ubiquitin-protein ligase (E3). It binds specific ubiquitin-conjugating enzymes (E2), accepts ubiquitin from E2, transfers ubiquitin to substrate lysine side chains, and transfers additional ubiquitin molecules to the end of growing ubiquitin chains. : Pssm-ID: 238033 [Multi-domain] Cd Length: 352 Bit Score: 508.64 E-value: 3.04e-176
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| C2_Smurf-like | cd08382 | C2 domain present in Smad ubiquitination-related factor (Smurf)-like proteins; A single C2 ... |
14-138 | 1.35e-68 | ||||||
C2 domain present in Smad ubiquitination-related factor (Smurf)-like proteins; A single C2 domain is found in Smurf proteins, C2-WW-HECT-domain E3s, which play an important role in the downregulation of the TGF-beta signaling pathway. Smurf proteins also regulate cell shape, motility, and polarity by degrading small guanosine triphosphatases (GTPases). 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 type-II topology. : Pssm-ID: 176028 [Multi-domain] Cd Length: 123 Bit Score: 221.03 E-value: 1.35e-68
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| WW | smart00456 | Domain with 2 conserved Trp (W) residues; Also known as the WWP or rsp5 domain. Binds ... |
307-339 | 6.05e-11 | ||||||
Domain with 2 conserved Trp (W) residues; Also known as the WWP or rsp5 domain. Binds proline-rich polypeptides. : Pssm-ID: 197736 [Multi-domain] Cd Length: 33 Bit Score: 57.61 E-value: 6.05e-11
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| WW | smart00456 | Domain with 2 conserved Trp (W) residues; Also known as the WWP or rsp5 domain. Binds ... |
236-267 | 8.91e-08 | ||||||
Domain with 2 conserved Trp (W) residues; Also known as the WWP or rsp5 domain. Binds proline-rich polypeptides. : Pssm-ID: 197736 [Multi-domain] Cd Length: 33 Bit Score: 48.75 E-value: 8.91e-08
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| Name | Accession | Description | Interval | E-value | ||||||||
| HECTc | cd00078 | HECT domain; C-terminal catalytic domain of a subclass of Ubiquitin-protein ligase (E3). It ... |
399-751 | 3.04e-176 | ||||||||
HECT domain; C-terminal catalytic domain of a subclass of Ubiquitin-protein ligase (E3). It binds specific ubiquitin-conjugating enzymes (E2), accepts ubiquitin from E2, transfers ubiquitin to substrate lysine side chains, and transfers additional ubiquitin molecules to the end of growing ubiquitin chains. Pssm-ID: 238033 [Multi-domain] Cd Length: 352 Bit Score: 508.64 E-value: 3.04e-176
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| HUL4 | COG5021 | Ubiquitin-protein ligase [Posttranslational modification, protein turnover, chaperones]; |
225-751 | 2.15e-169 | ||||||||
Ubiquitin-protein ligase [Posttranslational modification, protein turnover, chaperones]; Pssm-ID: 227354 [Multi-domain] Cd Length: 872 Bit Score: 509.69 E-value: 2.15e-169
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| HECTc | smart00119 | Domain Homologous to E6-AP Carboxyl Terminus with; E3 ubiquitin-protein ligases. Can bind to ... |
423-751 | 9.78e-154 | ||||||||
Domain Homologous to E6-AP Carboxyl Terminus with; E3 ubiquitin-protein ligases. Can bind to E2 enzymes. Pssm-ID: 214523 Cd Length: 328 Bit Score: 450.15 E-value: 9.78e-154
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| HECT | pfam00632 | HECT-domain (ubiquitin-transferase); The name HECT comes from Homologous to the E6-AP Carboxyl ... |
449-751 | 2.30e-127 | ||||||||
HECT-domain (ubiquitin-transferase); The name HECT comes from Homologous to the E6-AP Carboxyl Terminus. Pssm-ID: 459880 Cd Length: 304 Bit Score: 381.57 E-value: 2.30e-127
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| C2_Smurf-like | cd08382 | C2 domain present in Smad ubiquitination-related factor (Smurf)-like proteins; A single C2 ... |
14-138 | 1.35e-68 | ||||||||
C2 domain present in Smad ubiquitination-related factor (Smurf)-like proteins; A single C2 domain is found in Smurf proteins, C2-WW-HECT-domain E3s, which play an important role in the downregulation of the TGF-beta signaling pathway. Smurf proteins also regulate cell shape, motility, and polarity by degrading small guanosine triphosphatases (GTPases). 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 type-II topology. Pssm-ID: 176028 [Multi-domain] Cd Length: 123 Bit Score: 221.03 E-value: 1.35e-68
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| C2 | pfam00168 | C2 domain; |
14-100 | 1.23e-20 | ||||||||
C2 domain; Pssm-ID: 425499 [Multi-domain] Cd Length: 104 Bit Score: 87.37 E-value: 1.23e-20
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| C2 | smart00239 | Protein kinase C conserved region 2 (CalB); Ca2+-binding motif present in phospholipases, ... |
14-100 | 9.57e-17 | ||||||||
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: 76.37 E-value: 9.57e-17
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| WW | smart00456 | Domain with 2 conserved Trp (W) residues; Also known as the WWP or rsp5 domain. Binds ... |
307-339 | 6.05e-11 | ||||||||
Domain with 2 conserved Trp (W) residues; Also known as the WWP or rsp5 domain. Binds proline-rich polypeptides. Pssm-ID: 197736 [Multi-domain] Cd Length: 33 Bit Score: 57.61 E-value: 6.05e-11
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| WW | cd00201 | Two conserved tryptophans domain; also known as the WWP or rsp5 domain; around 40 amino acids; ... |
309-339 | 4.94e-10 | ||||||||
Two conserved tryptophans domain; also known as the WWP or rsp5 domain; around 40 amino acids; functions as an interaction module in a diverse set of signalling proteins; binds specific proline-rich sequences but at low affinities compared to other peptide recognition proteins such as antibodies and receptors; WW domains have a single groove formed by a conserved Trp and Tyr which recognizes a pair of residues of the sequence X-Pro; variable loops and neighboring domains confer specificity in this domain; there are five distinct groups based on binding: 1) PPXY motifs 2) the PPLP motif; 3) PGM motifs; 4) PSP or PTP motifs; 5) PR motifs. Pssm-ID: 238122 [Multi-domain] Cd Length: 31 Bit Score: 54.84 E-value: 4.94e-10
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| WW | pfam00397 | WW domain; The WW domain is a protein module with two highly conserved tryptophans that binds ... |
308-337 | 5.42e-09 | ||||||||
WW domain; The WW domain is a protein module with two highly conserved tryptophans that binds proline-rich peptide motifs in vitro. Pssm-ID: 459800 [Multi-domain] Cd Length: 30 Bit Score: 52.12 E-value: 5.42e-09
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| WW | smart00456 | Domain with 2 conserved Trp (W) residues; Also known as the WWP or rsp5 domain. Binds ... |
236-267 | 8.91e-08 | ||||||||
Domain with 2 conserved Trp (W) residues; Also known as the WWP or rsp5 domain. Binds proline-rich polypeptides. Pssm-ID: 197736 [Multi-domain] Cd Length: 33 Bit Score: 48.75 E-value: 8.91e-08
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| WW | cd00201 | Two conserved tryptophans domain; also known as the WWP or rsp5 domain; around 40 amino acids; ... |
237-267 | 1.28e-07 | ||||||||
Two conserved tryptophans domain; also known as the WWP or rsp5 domain; around 40 amino acids; functions as an interaction module in a diverse set of signalling proteins; binds specific proline-rich sequences but at low affinities compared to other peptide recognition proteins such as antibodies and receptors; WW domains have a single groove formed by a conserved Trp and Tyr which recognizes a pair of residues of the sequence X-Pro; variable loops and neighboring domains confer specificity in this domain; there are five distinct groups based on binding: 1) PPXY motifs 2) the PPLP motif; 3) PGM motifs; 4) PSP or PTP motifs; 5) PR motifs. Pssm-ID: 238122 [Multi-domain] Cd Length: 31 Bit Score: 47.91 E-value: 1.28e-07
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| WW | pfam00397 | WW domain; The WW domain is a protein module with two highly conserved tryptophans that binds ... |
236-265 | 4.88e-07 | ||||||||
WW domain; The WW domain is a protein module with two highly conserved tryptophans that binds proline-rich peptide motifs in vitro. Pssm-ID: 459800 [Multi-domain] Cd Length: 30 Bit Score: 46.34 E-value: 4.88e-07
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| COG5038 | COG5038 | Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only]; |
15-103 | 5.21e-04 | ||||||||
Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only]; Pssm-ID: 227371 [Multi-domain] Cd Length: 1227 Bit Score: 43.59 E-value: 5.21e-04
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| Name | Accession | Description | Interval | E-value | ||||||||
| HECTc | cd00078 | HECT domain; C-terminal catalytic domain of a subclass of Ubiquitin-protein ligase (E3). It ... |
399-751 | 3.04e-176 | ||||||||
HECT domain; C-terminal catalytic domain of a subclass of Ubiquitin-protein ligase (E3). It binds specific ubiquitin-conjugating enzymes (E2), accepts ubiquitin from E2, transfers ubiquitin to substrate lysine side chains, and transfers additional ubiquitin molecules to the end of growing ubiquitin chains. Pssm-ID: 238033 [Multi-domain] Cd Length: 352 Bit Score: 508.64 E-value: 3.04e-176
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| HUL4 | COG5021 | Ubiquitin-protein ligase [Posttranslational modification, protein turnover, chaperones]; |
225-751 | 2.15e-169 | ||||||||
Ubiquitin-protein ligase [Posttranslational modification, protein turnover, chaperones]; Pssm-ID: 227354 [Multi-domain] Cd Length: 872 Bit Score: 509.69 E-value: 2.15e-169
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| HECTc | smart00119 | Domain Homologous to E6-AP Carboxyl Terminus with; E3 ubiquitin-protein ligases. Can bind to ... |
423-751 | 9.78e-154 | ||||||||
Domain Homologous to E6-AP Carboxyl Terminus with; E3 ubiquitin-protein ligases. Can bind to E2 enzymes. Pssm-ID: 214523 Cd Length: 328 Bit Score: 450.15 E-value: 9.78e-154
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| HECT | pfam00632 | HECT-domain (ubiquitin-transferase); The name HECT comes from Homologous to the E6-AP Carboxyl ... |
449-751 | 2.30e-127 | ||||||||
HECT-domain (ubiquitin-transferase); The name HECT comes from Homologous to the E6-AP Carboxyl Terminus. Pssm-ID: 459880 Cd Length: 304 Bit Score: 381.57 E-value: 2.30e-127
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| C2_Smurf-like | cd08382 | C2 domain present in Smad ubiquitination-related factor (Smurf)-like proteins; A single C2 ... |
14-138 | 1.35e-68 | ||||||||
C2 domain present in Smad ubiquitination-related factor (Smurf)-like proteins; A single C2 domain is found in Smurf proteins, C2-WW-HECT-domain E3s, which play an important role in the downregulation of the TGF-beta signaling pathway. Smurf proteins also regulate cell shape, motility, and polarity by degrading small guanosine triphosphatases (GTPases). 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 type-II topology. Pssm-ID: 176028 [Multi-domain] Cd Length: 123 Bit Score: 221.03 E-value: 1.35e-68
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| C2 | pfam00168 | C2 domain; |
14-100 | 1.23e-20 | ||||||||
C2 domain; Pssm-ID: 425499 [Multi-domain] Cd Length: 104 Bit Score: 87.37 E-value: 1.23e-20
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| C2 | cd00030 | C2 domain; The C2 domain was first identified in PKC. C2 domains fold into an 8-standed ... |
15-118 | 5.07e-20 | ||||||||
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: 85.58 E-value: 5.07e-20
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| C2 | smart00239 | Protein kinase C conserved region 2 (CalB); Ca2+-binding motif present in phospholipases, ... |
14-100 | 9.57e-17 | ||||||||
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: 76.37 E-value: 9.57e-17
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| C2_Calpain | cd04046 | C2 domain present in Calpain proteins; A single C2 domain is found in calpains (EC 3.4.22.52, ... |
15-141 | 3.58e-11 | ||||||||
C2 domain present in Calpain proteins; A single C2 domain is found in calpains (EC 3.4.22.52, EC 3.4.22.53), calcium-dependent, non-lysosomal cysteine proteases. Caplains are classified as belonging to Clan CA by MEROPS and include six families: C1, C2, C10, C12, C28, and C47. 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: 176011 [Multi-domain] Cd Length: 126 Bit Score: 61.14 E-value: 3.58e-11
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| WW | smart00456 | Domain with 2 conserved Trp (W) residues; Also known as the WWP or rsp5 domain. Binds ... |
307-339 | 6.05e-11 | ||||||||
Domain with 2 conserved Trp (W) residues; Also known as the WWP or rsp5 domain. Binds proline-rich polypeptides. Pssm-ID: 197736 [Multi-domain] Cd Length: 33 Bit Score: 57.61 E-value: 6.05e-11
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| C2B_Copine | cd04047 | C2 domain second repeat in Copine; There are 2 copies of the C2 domain present in copine, a ... |
15-90 | 2.25e-10 | ||||||||
C2 domain second repeat in Copine; There are 2 copies of the C2 domain present in copine, a protein involved in membrane trafficking, protein-protein interactions, and perhaps even cell division and growth. 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: 176012 [Multi-domain] Cd Length: 110 Bit Score: 58.35 E-value: 2.25e-10
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| C2_E3_ubiquitin_ligase | cd04021 | C2 domain present in E3 ubiquitin ligase; E3 ubiquitin ligase is part of the ubiquitylation ... |
14-90 | 4.87e-10 | ||||||||
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: 57.67 E-value: 4.87e-10
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| WW | cd00201 | Two conserved tryptophans domain; also known as the WWP or rsp5 domain; around 40 amino acids; ... |
309-339 | 4.94e-10 | ||||||||
Two conserved tryptophans domain; also known as the WWP or rsp5 domain; around 40 amino acids; functions as an interaction module in a diverse set of signalling proteins; binds specific proline-rich sequences but at low affinities compared to other peptide recognition proteins such as antibodies and receptors; WW domains have a single groove formed by a conserved Trp and Tyr which recognizes a pair of residues of the sequence X-Pro; variable loops and neighboring domains confer specificity in this domain; there are five distinct groups based on binding: 1) PPXY motifs 2) the PPLP motif; 3) PGM motifs; 4) PSP or PTP motifs; 5) PR motifs. Pssm-ID: 238122 [Multi-domain] Cd Length: 31 Bit Score: 54.84 E-value: 4.94e-10
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| WW | pfam00397 | WW domain; The WW domain is a protein module with two highly conserved tryptophans that binds ... |
308-337 | 5.42e-09 | ||||||||
WW domain; The WW domain is a protein module with two highly conserved tryptophans that binds proline-rich peptide motifs in vitro. Pssm-ID: 459800 [Multi-domain] Cd Length: 30 Bit Score: 52.12 E-value: 5.42e-09
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| C2A_C2C_Synaptotagmin_like | cd08391 | C2 domain first and third repeat in Synaptotagmin-like proteins; Synaptotagmin is a ... |
15-100 | 6.48e-09 | ||||||||
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: 54.61 E-value: 6.48e-09
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| C2A_Synaptotagmin-like | cd04024 | C2 domain first repeat present in Synaptotagmin-like proteins; Synaptotagmin is a ... |
15-139 | 2.86e-08 | ||||||||
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: 52.81 E-value: 2.86e-08
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| C2_NEDD4_NEDD4L | cd04033 | C2 domain present in the Human neural precursor cell-expressed, developmentally down-regulated ... |
15-64 | 5.19e-08 | ||||||||
C2 domain present in the Human neural precursor cell-expressed, developmentally down-regulated 4 (NEDD4) and NEDD4-like (NEDD4L/NEDD42); Nedd4 and Nedd4-2 are two of the nine members of the Human Nedd4 family. All vertebrates appear to have both Nedd4 and Nedd4-2 genes. They are thought to participate in the regulation of epithelial Na+ channel (ENaC) activity. They also have identical specificity for ubiquitin conjugating enzymes (E2). Nedd4 and Nedd4-2 are composed of a C2 domain, 2-4 WW domains, and a ubiquitin ligase Hect domain. Their WW domains can bind PPxY (PY) or LPSY motifs, and in vitro studies suggest that WW3 and WW4 of both proteins bind PY motifs in the key substrates, with WW3 generally exhibiting higher affinity. Most Nedd4 family members, especially Nedd4-2, also have multiple splice variants, which might play different roles in regulating their substrates. 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: 175999 [Multi-domain] Cd Length: 133 Bit Score: 52.36 E-value: 5.19e-08
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| C2A_MCTP_PRT_plant | cd04022 | C2 domain first repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); ... |
14-120 | 7.59e-08 | ||||||||
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: 51.57 E-value: 7.59e-08
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| WW | smart00456 | Domain with 2 conserved Trp (W) residues; Also known as the WWP or rsp5 domain. Binds ... |
236-267 | 8.91e-08 | ||||||||
Domain with 2 conserved Trp (W) residues; Also known as the WWP or rsp5 domain. Binds proline-rich polypeptides. Pssm-ID: 197736 [Multi-domain] Cd Length: 33 Bit Score: 48.75 E-value: 8.91e-08
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| C2A_Munc13-like | cd08676 | C2 domain first repeat in Munc13 (mammalian uncoordinated)-like proteins; C2-like domains are ... |
12-117 | 9.59e-08 | ||||||||
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: 51.99 E-value: 9.59e-08
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| WW | cd00201 | Two conserved tryptophans domain; also known as the WWP or rsp5 domain; around 40 amino acids; ... |
237-267 | 1.28e-07 | ||||||||
Two conserved tryptophans domain; also known as the WWP or rsp5 domain; around 40 amino acids; functions as an interaction module in a diverse set of signalling proteins; binds specific proline-rich sequences but at low affinities compared to other peptide recognition proteins such as antibodies and receptors; WW domains have a single groove formed by a conserved Trp and Tyr which recognizes a pair of residues of the sequence X-Pro; variable loops and neighboring domains confer specificity in this domain; there are five distinct groups based on binding: 1) PPXY motifs 2) the PPLP motif; 3) PGM motifs; 4) PSP or PTP motifs; 5) PR motifs. Pssm-ID: 238122 [Multi-domain] Cd Length: 31 Bit Score: 47.91 E-value: 1.28e-07
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| C2B_Synaptotagmin | cd00276 | C2 domain second repeat present in Synaptotagmin; Synaptotagmin is a membrane-trafficking ... |
16-107 | 1.56e-07 | ||||||||
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: 51.04 E-value: 1.56e-07
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| C2D_Tricalbin-like | cd04040 | C2 domain fourth repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are ... |
15-81 | 3.05e-07 | ||||||||
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: 49.49 E-value: 3.05e-07
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| WW | pfam00397 | WW domain; The WW domain is a protein module with two highly conserved tryptophans that binds ... |
236-265 | 4.88e-07 | ||||||||
WW domain; The WW domain is a protein module with two highly conserved tryptophans that binds proline-rich peptide motifs in vitro. Pssm-ID: 459800 [Multi-domain] Cd Length: 30 Bit Score: 46.34 E-value: 4.88e-07
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| C2A_Copine | cd04048 | C2 domain first repeat in Copine; There are 2 copies of the C2 domain present in copine, a ... |
14-98 | 1.50e-06 | ||||||||
C2 domain first repeat in Copine; There are 2 copies of the C2 domain present in copine, a protein involved in membrane trafficking, protein-protein interactions, and perhaps even cell division and growth. 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: 176013 [Multi-domain] Cd Length: 120 Bit Score: 47.56 E-value: 1.50e-06
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| C2A_RIM1alpha | cd04031 | C2 domain first repeat contained in Rab3-interacting molecule (RIM) proteins; RIMs are ... |
18-64 | 2.34e-06 | ||||||||
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: 47.24 E-value: 2.34e-06
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| C2B_Synaptotagmin-1 | cd08402 | C2 domain second repeat present in Synaptotagmin 1; Synaptotagmin is a membrane-trafficking ... |
14-97 | 2.73e-06 | ||||||||
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: 47.40 E-value: 2.73e-06
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| C2B_RasA1_RasA4 | cd04025 | C2 domain second repeat present in RasA1 and RasA4; RasA1 and RasA4 are GAP1s (GTPase ... |
14-98 | 3.47e-06 | ||||||||
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: 46.71 E-value: 3.47e-06
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| C2_cPLA2 | cd04036 | C2 domain present in cytosolic PhosphoLipase A2 (cPLA2); A single copy of the C2 domain is ... |
16-64 | 8.44e-06 | ||||||||
C2 domain present in cytosolic PhosphoLipase A2 (cPLA2); A single copy of the C2 domain is present in cPLA2 which releases arachidonic acid from membranes initiating the biosynthesis of potent inflammatory mediators such as prostaglandins, leukotrienes, and platelet-activating factor. 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 of this cd have a type-II topology. Pssm-ID: 176001 [Multi-domain] Cd Length: 119 Bit Score: 45.33 E-value: 8.44e-06
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| C2B_Munc13 | cd04027 | C2 domain second repeat in Munc13 (mammalian uncoordinated) proteins; C2-like domains are ... |
14-102 | 1.38e-05 | ||||||||
C2 domain second repeat in Munc13 (mammalian uncoordinated) 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: 175993 [Multi-domain] Cd Length: 127 Bit Score: 45.25 E-value: 1.38e-05
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| C2A_Ferlin | cd08373 | C2 domain first repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and ... |
18-108 | 1.71e-05 | ||||||||
C2 domain first 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 first C2 repeat, C2A, and has a type-II topology. Pssm-ID: 176019 [Multi-domain] Cd Length: 127 Bit Score: 44.94 E-value: 1.71e-05
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| C2_RGS-like | cd08685 | C2 domain of the Regulator Of G-Protein Signaling (RGS) family; This CD contains members of ... |
10-97 | 3.76e-05 | ||||||||
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: 43.60 E-value: 3.76e-05
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| C2_Munc13_fungal | cd04043 | C2 domain in Munc13 (mammalian uncoordinated) proteins; fungal group; C2-like domains are ... |
17-83 | 9.09e-05 | ||||||||
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: 42.64 E-value: 9.09e-05
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| C2_C21orf25-like | cd08678 | C2 domain found in the Human chromosome 21 open reading frame 25 (C21orf25) protein; The ... |
35-135 | 1.03e-04 | ||||||||
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: 42.74 E-value: 1.03e-04
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| C2_PKC_alpha_gamma | cd04026 | C2 domain in Protein Kinase C (PKC) alpha and gamma; A single C2 domain is found in PKC alpha ... |
12-81 | 1.16e-04 | ||||||||
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: 42.63 E-value: 1.16e-04
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| C2C_Tricalbin-like | cd04045 | C2 domain third repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are ... |
15-113 | 1.20e-04 | ||||||||
C2 domain third 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 third C2 repeat, C2C, and has a type-II topology. Pssm-ID: 176010 [Multi-domain] Cd Length: 120 Bit Score: 42.19 E-value: 1.20e-04
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| COG5038 | COG5038 | Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only]; |
15-103 | 5.21e-04 | ||||||||
Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only]; Pssm-ID: 227371 [Multi-domain] Cd Length: 1227 Bit Score: 43.59 E-value: 5.21e-04
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| C2E_Ferlin | cd04037 | C2 domain fifth repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and ... |
15-88 | 5.36e-04 | ||||||||
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: 40.61 E-value: 5.36e-04
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| C2B_SLP_1-2-3-4 | cd04020 | C2 domain second repeat present in Synaptotagmin-like proteins 1-4; All Slp members basically ... |
22-100 | 6.13e-04 | ||||||||
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: 41.15 E-value: 6.13e-04
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| C2_NEDL1-like | cd08691 | C2 domain present in NEDL1 (NEDD4-like ubiquitin protein ligase-1); NEDL1 (AKA HECW1(HECT, C2 ... |
13-82 | 7.25e-04 | ||||||||
C2 domain present in NEDL1 (NEDD4-like ubiquitin protein ligase-1); NEDL1 (AKA HECW1(HECT, C2 and WW domain containing E3 ubiquitin protein ligase 1)) is a newly identified HECT-type E3 ubiquitin protein ligase highly expressed in favorable neuroblastomas. In vertebrates it is found primarily in neuronal tissues, including the spinal cord. NEDL1 is thought to normally function in the quality control of cellular proteins by eliminating misfolded proteins. This is thought to be accomplished via a mechanism analogous to that of ER-associated degradation by forming tight complexes and aggregating misfolded proteins that have escaped ubiquitin-mediated degradation. NEDL1, is composed of a C2 domain, two WW domains, and a ubiquitin ligase Hect 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: 176073 [Multi-domain] Cd Length: 137 Bit Score: 40.47 E-value: 7.25e-04
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| C2C_MCTP_PRT | cd08377 | C2 domain third repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); ... |
18-137 | 8.45e-04 | ||||||||
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: 39.98 E-value: 8.45e-04
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| C2D_Ferlin | cd04017 | C2 domain fourth repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and ... |
35-64 | 1.70e-03 | ||||||||
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: 39.45 E-value: 1.70e-03
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| C2B_Synaptotagmin-17 | cd08410 | C2 domain second repeat present in Synaptotagmin 17; Synaptotagmin is a membrane-trafficking ... |
11-83 | 3.56e-03 | ||||||||
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: 38.33 E-value: 3.56e-03
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| C2C_KIAA1228 | cd04030 | C2 domain third repeat present in uncharacterized human KIAA1228-like proteins; KIAA proteins ... |
14-100 | 3.96e-03 | ||||||||
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: 38.02 E-value: 3.96e-03
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| C2_Intersectin | cd08375 | C2 domain present in Intersectin; A single instance of the C2 domain is located C terminally ... |
14-82 | 4.93e-03 | ||||||||
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: 38.13 E-value: 4.93e-03
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| C2A_Rabphilin_Doc2 | cd04035 | C2 domain first repeat present in Rabphilin and Double C2 domain; Rabphilin is found neurons ... |
18-119 | 5.28e-03 | ||||||||
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: 37.65 E-value: 5.28e-03
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| C2B_RIM1alpha | cd04028 | C2 domain second repeat contained in Rab3-interacting molecule (RIM) proteins; RIMs are ... |
15-101 | 6.63e-03 | ||||||||
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: 37.75 E-value: 6.63e-03
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