FYVE, RhoGEF and PH domain containing/faciogenital dysplasia protein 5, N-terminal Pleckstrin Homology (PH) domain; FGD5 regulates promotes angiogenesis of vascular endothelial growth factor (VEGF) in vascular endothelial cells, including network formation, permeability, directional movement, and proliferation. In general, FGDs have a RhoGEF (DH) domain, followed by a PH domain, a FYVE domain and a C-terminal PH domain. All FGDs are guanine nucleotide exchange factors that activate the Rho GTPase Cdc42, an important regulator of membrane trafficking. The RhoGEF domain is responsible for GEF catalytic activity, while the PH domain is involved in intracellular targeting of the DH domain. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083 1144 VRGQGDLLQPGREFLKEGTLMKVTGKNRRPRHLFLMNDVLLYTYPQKDGKYRLKNTLAVANMKVSRPVMEKVPYALKIET 1223
Cdd:cd15792      1 VRGQRDLLQPGREFVKEGTLMKVSGKNRHPRHLFLMNDVLLYTYPQKDGKYRLKNTLAVSGMKVSRPVIEKAQNVLKIEV 80

                           90       100       110       120
                   ....*....|....*....|....*....|....*....|...
gi 2217342083 1224 SESCLMLSASSCAERDEWYGCLSRALPEDYKAQALAAFHHSVE 1266
Cdd:cd15792     81 SEVCLTLSASSCSERDEWYSCLSRTIPDDYKAQNASSSHSSAE 123

FYVE, RhoGEF and PH domain containing/faciogenital dysplasia proteins 5 and 6 pleckstrin homology (PH) domain, C-terminus; FGD5 regulates promotes angiogenesis of vascular endothelial growth factor (VEGF) in vascular endothelial cells, including network formation, permeability, directional movement, and proliferation. The specific function of FGD6 is unknown. In general, FGDs have a RhoGEF (DH) domain, followed by a PH domain, a FYVE domain and a C-terminal PH domain. All FGDs are guanine nucleotide exchange factors that activate the Rho GTPase Cdc42, an important regulator of membrane trafficking. The RhoGEF domain is responsible for GEF catalytic activity, while the PH domain is involved in intracellular targeting of the DH domain. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083 1411 ISGYLSRCKRGKRHWKKLWFVIKGKVLYTYMASEDKVALESMPLLGFTIAPEKEEGSSEVGPIFHLYHKKTLFYSFKAED 1490
Cdd:cd13237      1 MSGYLQRRKKSKKSWKRLWFVLKDKVLYTYKASEDVVALESVPLLGFTVVTIDESFEEDESLVFQLLHKGQLPIIFRADD 80

                           90
                   ....*....|.
gi 2217342083 1491 TNSAQRWIEAM 1501
Cdd:cd13237     81 AETAQRWIEAL 91

hypothetical protein; Provisional

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083  175 SREGEEGTDLALEDEGEGcaDEPGTLEQVSRSEEEEKLVQPHRECSLEDSGPWAGEGvfqsdlllphiHGEDQEPPDTPG 254
Cdd:PHA03169    79 SRHGEKEERGQGGPSGSG--SESVGSPTPSPSGSAEELASGLSPENTSGSSPESPAS-----------HSPPPSPPSHPG 145

                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083  255 EAEEDDEEGCASTD---PAGADEGSGPDRPTEdmgqdAEDTSEEPPEKEELAGvqEAETATDCPEVLEEGCEEatGVTGG 331
Cdd:PHA03169   146 PHEPAPPESHNPSPnqqPSSFLQPSHEDSPEE-----PEPPTSEPEPDSPGPP--QSETPTSSPPPQSPPDEP--GEPQS 216

                          170       180       190
                   ....*....|....*....|....*....|....*
gi 2217342083  332 EQVDLSEPPDhekktnqEVAAATLEDHAQDESAEE 366
Cdd:PHA03169   217 PTPQQAPSPN-------TQQAVEHEDEPTEPEREG 244

FYVE, RhoGEF and PH domain containing/faciogenital dysplasia protein 5, N-terminal Pleckstrin Homology (PH) domain; FGD5 regulates promotes angiogenesis of vascular endothelial growth factor (VEGF) in vascular endothelial cells, including network formation, permeability, directional movement, and proliferation. In general, FGDs have a RhoGEF (DH) domain, followed by a PH domain, a FYVE domain and a C-terminal PH domain. All FGDs are guanine nucleotide exchange factors that activate the Rho GTPase Cdc42, an important regulator of membrane trafficking. The RhoGEF domain is responsible for GEF catalytic activity, while the PH domain is involved in intracellular targeting of the DH domain. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083 1144 VRGQGDLLQPGREFLKEGTLMKVTGKNRRPRHLFLMNDVLLYTYPQKDGKYRLKNTLAVANMKVSRPVMEKVPYALKIET 1223
Cdd:cd15792      1 VRGQRDLLQPGREFVKEGTLMKVSGKNRHPRHLFLMNDVLLYTYPQKDGKYRLKNTLAVSGMKVSRPVIEKAQNVLKIEV 80

                           90       100       110       120
                   ....*....|....*....|....*....|....*....|...
gi 2217342083 1224 SESCLMLSASSCAERDEWYGCLSRALPEDYKAQALAAFHHSVE 1266
Cdd:cd15792     81 SEVCLTLSASSCSERDEWYSCLSRTIPDDYKAQNASSSHSSAE 123

FYVE, RhoGEF and PH domain containing/faciogenital dysplasia proteins 5 and 6 pleckstrin homology (PH) domain, C-terminus; FGD5 regulates promotes angiogenesis of vascular endothelial growth factor (VEGF) in vascular endothelial cells, including network formation, permeability, directional movement, and proliferation. The specific function of FGD6 is unknown. In general, FGDs have a RhoGEF (DH) domain, followed by a PH domain, a FYVE domain and a C-terminal PH domain. All FGDs are guanine nucleotide exchange factors that activate the Rho GTPase Cdc42, an important regulator of membrane trafficking. The RhoGEF domain is responsible for GEF catalytic activity, while the PH domain is involved in intracellular targeting of the DH domain. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083 1411 ISGYLSRCKRGKRHWKKLWFVIKGKVLYTYMASEDKVALESMPLLGFTIAPEKEEGSSEVGPIFHLYHKKTLFYSFKAED 1490
Cdd:cd13237      1 MSGYLQRRKKSKKSWKRLWFVLKDKVLYTYKASEDVVALESVPLLGFTVVTIDESFEEDESLVFQLLHKGQLPIIFRADD 80

                           90
                   ....*....|.
gi 2217342083 1491 TNSAQRWIEAM 1501
Cdd:cd13237     81 AETAQRWIEAL 91

Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases; Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases Also called Dbl-homologous (DH) domain. It appears that PH domains invariably occur C-terminal to RhoGEF/DH domains. Improved coverage.

                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083   939 IAQELLSSEKAYVEMLQHLNLDFHGAVMRALDDMDHEGRDTLareelrqgLSELPAIHDLHQGILEELEERLSNWE-SQQ 1017
Cdd:smart00325    1 VLKELLQTERNYVRDLKLLVEVFLKPLKKELKLLSPNELETL--------FGNIEEIYEFHRDFLDELEERIEEWDdSVE 72

                            90       100       110       120       130       140       150       160
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083  1018 KVADVFLAREQGFDHHATHILQFDRYLGLLSEnCLHSPRLAAAVREFEQSVQGGSQTAKHRLLRVVQRLFQYQVLLTDYL 1097
Cdd:smart00325   73 RIGDVFLKLEEFFKIYSEYCSNHPDALELLKK-LKKNPRFQKFLKEIESSPQCRRLTLESLLLKPVQRLTKYPLLLKELL 151

                           170       180
                    ....*....|....*....|....*....
gi 2217342083  1098 NNLCPDSAEYDNTQGALSLISKVTDRAND 1126
Cdd:smart00325  152 KHTPEDHEDREDLKKALKAIKELANQVNE 180

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.

                            10        20        30        40        50
                    ....*....|....*....|....*....|....*....|....*....|....*....
gi 2217342083  1288 VMMCMNCGCDFSLTLRRHHCHACGKIVCRNCSRNKYPLKYL-KDRMAKVCDGCFGELKK 1345
Cdd:smart00064   10 VSNCMGCGKEFNLTKRRHHCRNCGRIFCSKCSSKKAPLPKLgIERPVRVCDDCYENLNG 68

Pleckstrin homology domain; Domain commonly found in eukaryotic signalling proteins. The domain family possesses multiple functions including the abilities to bind inositol phosphates, and various proteins. PH domains have been found to possess inserted domains (such as in PLC gamma, syntrophins) and to be inserted within other domains. Mutations in Brutons tyrosine kinase (Btk) within its PH domain cause X-linked agammaglobulinaemia (XLA) in patients. Point mutations cluster into the positively charged end of the molecule around the predicted binding site for phosphatidylinositol lipids.

                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083  1411 ISGYLSRC-KRGKRHWKKLWFVIKGKVLYTY---MASEDKVALESMPLLGFTIAPEKEEGSSEVGPIFHLYHKKTLFYSF 1486
Cdd:smart00233    3 KEGWLYKKsGGGKKSWKKRYFVLFNSTLLYYkskKDKKSYKPKGSIDLSGCTVREAPDPDSSKKPHCFEIKTSDRKTLLL 82

                            90
                    ....*....|....*....
gi 2217342083  1487 KAEDTNSAQRWIEAMEDAS 1505
Cdd:smart00233   83 QAESEEEREKWVEALRKAI 101

PH domain; PH stands for pleckstrin homology.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083 1159 KEGTLMKVTGKNR---RPRHLFLMNDVLL-YTYPQKDGKYRLKNTLAVANMKVSRPV---MEKVPYALKIETSES----C 1227
Cdd:pfam00169    3 KEGWLLKKGGGKKkswKKRYFVLFDGSLLyYKDDKSGKSKEPKGSISLSGCEVVEVVasdSPKRKFCFELRTGERtgkrT 82

                           90       100
                   ....*....|....*....|...
gi 2217342083 1228 LMLSASSCAERDEWYGCLSRALP 1250
Cdd:pfam00169   83 YLLQAESEEERKDWIKAIQSAIR 105

hypothetical protein; Provisional

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083  175 SREGEEGTDLALEDEGEGcaDEPGTLEQVSRSEEEEKLVQPHRECSLEDSGPWAGEGvfqsdlllphiHGEDQEPPDTPG 254
Cdd:PHA03169    79 SRHGEKEERGQGGPSGSG--SESVGSPTPSPSGSAEELASGLSPENTSGSSPESPAS-----------HSPPPSPPSHPG 145

                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083  255 EAEEDDEEGCASTD---PAGADEGSGPDRPTEdmgqdAEDTSEEPPEKEELAGvqEAETATDCPEVLEEGCEEatGVTGG 331
Cdd:PHA03169   146 PHEPAPPESHNPSPnqqPSSFLQPSHEDSPEE-----PEPPTSEPEPDSPGPP--QSETPTSSPPPQSPPDEP--GEPQS 216

                          170       180       190
                   ....*....|....*....|....*....|....*
gi 2217342083  332 EQVDLSEPPDhekktnqEVAAATLEDHAQDESAEE 366
Cdd:PHA03169   217 PTPQQAPSPN-------TQQAVEHEDEPTEPEREG 244

FYVE, RhoGEF and PH domain containing/faciogenital dysplasia protein 5, N-terminal Pleckstrin Homology (PH) domain; FGD5 regulates promotes angiogenesis of vascular endothelial growth factor (VEGF) in vascular endothelial cells, including network formation, permeability, directional movement, and proliferation. In general, FGDs have a RhoGEF (DH) domain, followed by a PH domain, a FYVE domain and a C-terminal PH domain. All FGDs are guanine nucleotide exchange factors that activate the Rho GTPase Cdc42, an important regulator of membrane trafficking. The RhoGEF domain is responsible for GEF catalytic activity, while the PH domain is involved in intracellular targeting of the DH domain. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083 1144 VRGQGDLLQPGREFLKEGTLMKVTGKNRRPRHLFLMNDVLLYTYPQKDGKYRLKNTLAVANMKVSRPVMEKVPYALKIET 1223
Cdd:cd15792      1 VRGQRDLLQPGREFVKEGTLMKVSGKNRHPRHLFLMNDVLLYTYPQKDGKYRLKNTLAVSGMKVSRPVIEKAQNVLKIEV 80

                           90       100       110       120
                   ....*....|....*....|....*....|....*....|...
gi 2217342083 1224 SESCLMLSASSCAERDEWYGCLSRALPEDYKAQALAAFHHSVE 1266
Cdd:cd15792     81 SEVCLTLSASSCSERDEWYSCLSRTIPDDYKAQNASSSHSSAE 123

FYVE-like domain found in FYVE, RhoGEF and PH domain-containing protein 5 (FGD5) and similar proteins; FGD5, also termed zinc finger FYVE domain-containing protein 23, is an endothelial cell (EC)-specific guanine nucleotide exchange factor (GEF) that regulates endothelial adhesion, survival, and angiogenesis by modulating phosphatidylinositol 3-kinase signaling. It functions as a novel genetic regulator of vascular pruning by activation of endothelial cell-targeted apoptosis. FGD5 is a homologue of FGD1 and contains a DBL homology (DH) domain, a pleckstrin homology (PH) domain, a FYVE domain, and another PH domain in the C-terminus, but lacks the N-terminal proline-rich domain (PRD) found in FGD1. The FYVE domain of FGD5 resembles a FYVE-like domain that is different from the canonical FYVE domains, since it lacks one of the three conserved signature motifs (the WxxD motif) that are involved in phosphatidylinositol 3-phosphate (PtdIns3P or PI3P) binding and exhibits altered lipid binding specificities.

                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 2217342083 1280 PTLVPVTHVMMCMNCGCDFSLTLRRHHCHACGKIVCRNCSRNKYPLKYLKDRMAKVCDGCFGELKKR 1346
Cdd:cd15742      1 PTLVPVSHVMMCMNCGSDFTLTLRRHHCHACGKIVCRNCSRNKYPLKYLKDRPAKVCDGCFAELRKR 67

FYVE, RhoGEF and PH domain containing/faciogenital dysplasia family proteins, N-terminal Pleckstrin homology (PH) domain; In general, FGDs have a RhoGEF (DH) domain, followed by an N-terminal PH domain, a FYVE domain and a C-terminal PH domain. All FGDs are guanine nucleotide exchange factors that activates the Rho GTPase Cdc42, an important regulator of membrane trafficking. The RhoGEF domain is responsible for GEF catalytic activity, while the N-terminal PH domain is involved in intracellular targeting of the DH domain. Mutations in the FGD1 gene are responsible for the X-linked disorder known as faciogenital dysplasia (FGDY). PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083 1159 KEGTLMKVTGKN--RRPRHLFLMNDVLLYTYPQKDG---KYRLKNTLAVANMKVSRPVMEKVPYALKIETSESCLMLSAS 1233
Cdd:cd13328      1 KEGQILKLSAKNgtPQPRYLFLFNDMLLYCVPKLSLvgqKFSVRNRLDVAGMKVREPVNENYPHTFKISGKERSLELQAS 80

                           90
                   ....*....|..
gi 2217342083 1234 SCAERDEWYGCL 1245
Cdd:cd13328     81 SAEEKDEWIQAI 92

FYVE, RhoGEF and PH domain containing/faciogenital dysplasia protein 6, N-terminal Pleckstrin Homology (PH) domain; FGD5 regulates promotes angiogenesis of vascular endothelial growth factor (VEGF) in vascular endothelial cells, including network formation, permeability, directional movement, and proliferation. The specific function of FGD6 is unknown. In general, FGDs have a RhoGEF (DH) domain, followed by a PH domain, a FYVE domain and a C-terminal PH domain. All FGDs are guanine nucleotide exchange factors that activate the Rho GTPase Cdc42, an important regulator of membrane trafficking. The RhoGEF domain is responsible for GEF catalytic activity, while the PH domain is involved in intracellular targeting of the DH domain. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083 1146 GQGDLLQPGREFLKEGTLMKVTGKNRRPRHLFLMNDVLLYTYPQKDGKYRLKNTLAVANMKVSRPVMEKVPYALKIETSE 1225
Cdd:cd15793      3 GHHEIVQPGRVFLKEGTLMKLSRKVMQPRMFFLFNDALLYTTPVQSGMYKLNNMLSLAGMKVSKPSQEAYQNELNIESVE 82

                           90       100
                   ....*....|....*....|....*...
gi 2217342083 1226 SCLMLSASSCAERDEWYGCLSRALpEDY 1253
Cdd:cd15793     83 RSFILSASSATERDEWLEAISRAI-EEY 109

FYVE domain found in FYVE, RhoGEF and PH domain-containing protein 6 (FGD6) and similar proteins; FGD6, also termed zinc finger FYVE domain-containing protein 24 is a putative Cdc42-specific guanine nucleotide exchange factor (GEF) whose biological function remains unclear. It is a homologue of FGD1 and contains a DBL homology (DH) domain and pleckstrin homology (PH) domain in the middle region, a FYVE domain, and another PH domain in the C-terminus, but lacks the N-terminal proline-rich domain (PRD) found in FGD1. Moreover, the FYVE domain of FGD6 is a canonical FYVE domain, which has been found in many proteins involved in membrane trafficking and phosphoinositide metabolism, and has been defined by three signature sequences: an N-terminal WxxD motif (x for any residue), the central basic R(R/K)HHCR patch, and a C-terminal RVC motif, which form a compact phosphatidylinositol 3-phosphate (PtdIns3P or PI3P)-binding site.

                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 2217342083 1280 PTLVPVTHVMMCMNCGCDFSLTLRRHHCHACGKIVCRNCSRNKYPLKYLKDRMAKVCDGCF 1340
Cdd:cd15743      1 PIWIPDSRVTMCMICTSEFTVTWRRHHCRACGKVVCGSCSSNKAPLEYLKNKSARVCDECF 61

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.

                            10        20        30        40        50
                    ....*....|....*....|....*....|....*....|....*....|....*....
gi 2217342083  1288 VMMCMNCGCDFSLTLRRHHCHACGKIVCRNCSRNKYPLKYL-KDRMAKVCDGCFGELKK 1345
Cdd:smart00064   10 VSNCMGCGKEFNLTKRRHHCRNCGRIFCSKCSSKKAPLPKLgIERPVRVCDDCYENLNG 68

FYVE domain found in endofin and similar proteins; Endofin, also termed zinc finger FYVE domain-containing protein 16 (ZFY16), or endosome-associated FYVE domain protein, is a FYVE domain-containing protein that is localized to EEA1-containing endosomes. It is regulated by phosphoinositol lipid and engaged in endosome-mediated receptor modulation. Endofin is involved in Bone morphogenetic protein (BMP) signaling through interacting with Smad1 preferentially and enhancing Smad1 phosphorylation and nuclear localization upon BMP stimulation. It also functions as a scaffold protein that brings Smad4 to the proximity of the receptor complex in Transforming growth factor (TGF)-beta signaling. Moreover, endofin is a novel tyrosine phosphorylation target downstream of epidermal growth factor receptor (EGFR) in EGF-signaling. In addition, endofin plays a role in endosomal trafficking by recruiting cytosolic TOM1, an important molecule for membrane recruitment of clathrin, onto endosomal membranes.

                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 2217342083 1276 GERPPTLVPVTHVMMCMNCGCDFSLTLRRHHCHACGKIVCRNCSRNKYPLKYLKDRMAKVCDGCF 1340
Cdd:cd15729      1 GKVAPVWVPDSEAPNCMQCEVKFTFTKRRHHCRACGKVLCSACCSLKARLEYLDNKEARVCVPCY 65

FYVE domain found in FYVE, RhoGEF and PH domain-containing protein facio-genital dysplasia FGD1, FGD2, FGD4; This family represents a group of Rho GTPase cell division cycle 42 (Cdc42)-specific guanine nucleotide exchange factors (GEFs), including FYVE, RhoGEF and PH domain-containing protein FGD1, FGD2 and FGD4. FGD1, also termed faciogenital dysplasia 1 protein, or Rho/Rac guanine nucleotide exchange factor FGD1 (Rho/Rac GEF), or zinc finger FYVE domain-containing protein 3, is a central regulator of extracellular matrix remodeling and belongs to the DBL family of GEFs that regulate the activation of the Rho GTPases. FGD1 is encoded by gene FGD1. Disabling mutations in the FGD1 gene cause the human X-linked developmental disorder faciogenital dysplasia (FGDY, also known as Aarskog-Scott syndrome). FGD2, also termed zinc finger FYVE domain-containing protein 4, is expressed in antigen-presenting cells, including B lymphocytes, macrophages, and dendritic cells. It localizes to early endosomes and active membrane ruffles. It plays a role in leukocyte signaling and vesicle trafficking in cells specialized to present antigen in the immune system. FGD4, also termed actin filament-binding protein frabin, or FGD1-related F-actin-binding protein, or zinc finger FYVE domain-containing protein 6, functions as an F-actin-binding (FAB) protein showing significant homology to FGD1. It induces the formation of filopodia through the activation of Cdc42 in fibroblasts. Those FGD proteins possess a similar domain organization that contains a DBL homology (DH) domain, a pleckstrin homology (PH) domain, a FYVE domain, and another PH domain in the C-terminus. However, each FGD has a unique N-terminal region that may directly or indirectly interact with F-actin. FGD1 and FGD4 have an N-terminal proline-rich domain (PRD) and an N-terminal F-actin binding (FAB) domain, respectively. This model corresponds to the FYVE domain, which has been found in many proteins involved in membrane trafficking and phosphoinositide metabolism, and has been defined by three signature sequences: an N-terminal WxxD motif (x for any residue), the central basic R(R/K)HHCR patch, and a C-terminal RVC motif, which form a compact phosphatidylinositol 3-phosphate (PtdIns3P or PI3P)-binding site. FGD1 possesses a FYVE-like domain that lack the N-terminal WxxD motif. Moreover, FGD2 is the only known RhoGEF family member shown to have a functional FYVE domain and endosomal binding activity.

                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 2217342083 1280 PTLVPVTHVMMCMNCGCDF-SLTLRRHHCHACGKIVCRNCSRNKYPLKYLKDRMAKVCDGCFGEL 1343
Cdd:cd15741      1 PRWVRDNEVTMCMRCKEPFnALTRRRHHCRACGYVVCWKCSDYKATLEYDGNKLNRVCKHCYVIL 65

FERM, RhoGEF and pleckstrin domain-containing protein 1 and related proteins Pleckstrin Homology (PH) domain, repeat 1; Members here include FARP1 (also called Chondrocyte-derived ezrin-like protein; PH domain-containing family C member 2), FARP2 (also called FIR/FERM domain including RhoGEF; FGD1-related Cdc42-GEF/FRG), and FARP6 (also called Zinc finger FYVE domain-containing protein 24). They are members of the Dbl family guanine nucleotide exchange factors (GEFs) which are upstream positive regulators of Rho GTPases. Little is known about FARP1 and FARP6, though FARP1 has increased expression in differentiated chondrocytes. FARP2 is thought to regulate neurite remodeling by mediating the signaling pathways from membrane proteins to Rac. It is found in brain, lung, and testis, as well as embryonic hippocampal and cortical neurons. FARP1 and FARP2 are composed of a N-terminal FERM domain, a proline-rich (PR) domain, Dbl-homology (DH), and two C-terminal PH domains. FARP6 is composed of Dbl-homology (DH), and two C-terminal PH domains separated by a FYVE domain. This hierarchy contains the first PH repeat. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083 1150 LLQPGREFLKEGTLMKVTGKNRRPRHLFLMNDVLLYTY--PQKDGKYRLKNTLAVANMKV--SRPVMEkVPYALKIETSE 1225
Cdd:cd01220      1 LVQPGREFIREGCLQKLSKKGLQQRMFFLFSDVLLYTSrsPTPSLQFKVHGQLPLRGLMVeeSEPEWG-VAHCFTIYGGN 79

                           90       100
                   ....*....|....*....|...
gi 2217342083 1226 SCLMLSASSCAERDEWYGCLSRA 1248
Cdd:cd01220     80 RALTVAASSEEEKERWLEDLQRA 102

FYVE domain found in early endosome antigen 1 (EEA1) and similar proteins; EEA1, also termed endosome-associated protein p162, or zinc finger FYVE domain-containing protein 2, is an essential component of the endosomal fusion machinery and required for the fusion and maturation of early endosomes in endocytosis. It forms a parallel coiled-coil homodimer in cells. EEA1 serves as the p97 ATPase substrate and the p97 ATPase may regulate the size of early endosomes by governing the oligomeric state of EEA1. It can interact with the GTP-bound form of Rab22a and be involved in endosomal membrane trafficking. EEA1 also functions as an obligate scaffold for angiotensin II-induced Akt activation in early endosomes. It can be phosphorylated by p38 mitogen-activated protein kinase (MAPK) and further regulate mu opioid receptor endocytosis. EEA1 consists of an N-terminal C2H2 Zn2+ finger, four long heptad repeats, and a C-terminal region containing a calmodulin binding (IQ) motif, a Rab5 interaction site, and a FYVE domain. This model corresponds to the FYVE domain that is responsible for binding phosphatidyl inositol-3-phosphate (PtdIns3P or PI3P) on the membrane.

                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*..
gi 2217342083 1287 HVMMCMNCGCDFSLTLRRHHCHACGKIVCRNCSRNKYPLKYLKdRMAKVCDGCFGEL 1343
Cdd:cd15730      8 EVQNCMACGKGFSVTVRKHHCRQCGNIFCNECSSKTATTPSSK-KPVRVCDACFDDL 63

FYVE domain found in protein containing both PH and FYVE domains 1 (phafin-1), 2 (phafin-2), and similar proteins; This family includes protein containing both PH and FYVE domains 1 (phafin-1) and 2 (phafin-2). Phafin-1 is a representative of a novel family of PH and FYVE domain-containing proteins called phafins. It is a ubiquitously expressed pro-apoptotic protein via translocating to lysosomes, facilitating apoptosis induction through a lysosomal-mitochondrial apoptotic pathway. Phafin-2 is a ubiquitously expressed endoplasmic reticulum-associated protein that facilitates tumor necrosis factor alpha (TNF-alpha)-triggered cellular apoptosis through endoplasmic reticulum (ER)-mitochondrial apoptotic pathway. It is an endosomal phosphatidylinositol 3-phosphate (PtdIns3P or PI3P) effector, as well as an interactor of the endosomal-tethering protein EEA1. It regulates endosome fusion upstream of Rab5. Phafin-2 also functions as a novel regulator of endocytic epidermal growth factor receptor (EGFR) degradation through a role in endosomal fusion.

                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 2217342083 1283 VPVTHVMMCMNCG-CDFSLTLRRHHCHACGKIVCRNCSRNKYPLKYLKDRMAKVCDGCF 1340
Cdd:cd15717      3 VPDSEAPVCMHCKkTKFTAINRRHHCRKCGAVVCGACSSKKFLLPHQSSKPLRVCDTCY 61

FYVE domain found in ankyrin repeat and FYVE domain-containing protein 1 (ANFY1) and similar proteins; ANFY1, also termed ankyrin repeats hooked to a zinc finger motif (Ankhzn), is a novel cytoplasmic protein that belongs to a new group of double zinc finger proteins involved in vesicle or protein transport. It is ubiquitously expressed in a spatiotemporal-specific manner and is located on endosomes. ANFY1 contains an N-terminal coiled-coil region and a BTB/POZ domain, ankyrin repeats in the middle, and a C-terminal FYVE domain.

                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|.
gi 2217342083 1291 CMNCGCDFSLTLRRHHCHACGKIVCRNCSRNKYP-LKYLKDRMAKVCDGCF 1340
Cdd:cd15728     10 CYECGVKFGITTRKHHCRHCGRLLCSKCSTKEVPiIKFDLNKPVRVCDVCF 60

Pleckstrin homology domain; Domain commonly found in eukaryotic signalling proteins. The domain family possesses multiple functions including the abilities to bind inositol phosphates, and various proteins. PH domains have been found to possess inserted domains (such as in PLC gamma, syntrophins) and to be inserted within other domains. Mutations in Brutons tyrosine kinase (Btk) within its PH domain cause X-linked agammaglobulinaemia (XLA) in patients. Point mutations cluster into the positively charged end of the molecule around the predicted binding site for phosphatidylinositol lipids.

                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083  1411 ISGYLSRC-KRGKRHWKKLWFVIKGKVLYTY---MASEDKVALESMPLLGFTIAPEKEEGSSEVGPIFHLYHKKTLFYSF 1486
Cdd:smart00233    3 KEGWLYKKsGGGKKSWKKRYFVLFNSTLLYYkskKDKKSYKPKGSIDLSGCTVREAPDPDSSKKPHCFEIKTSDRKTLLL 82

                            90
                    ....*....|....*....
gi 2217342083  1487 KAEDTNSAQRWIEAMEDAS 1505
Cdd:smart00233   83 QAESEEEREKWVEALRKAI 101

FYVE domain found in myotubularin-related protein 4 (MTMR4) and similar proteins; MTMR4, also termed FYVE domain-containing dual specificity protein phosphatase 2 (FYVE-DSP2), or zinc finger FYVE domain-containing protein 11, is an dual specificity protein phosphatase that specifically dephosphorylates phosphatidylinositol 3-phosphate (PtdIns3P or PI3P). It is localizes to early endosomes, as well as to Rab11- and Sec15-positive recycling endosomes, and regulates sorting from early endosomes. Moreover, MTMR4 is preferentially associated with and dephosphorylated the activated regulatory Smad proteins (R-Smads) in cytoplasm to keep transforming growth factor (TGF) beta signaling in homeostasis. It also functions as an essential negative modulator for the homeostasis of bone morphogenetic protein (BMP)/decapentaplegic (Dpp) signaling. In addition, MTMR4 acts as a novel interactor of the ubiquitin ligase Nedd4 (neural-precursor-cell-expressed developmentally down-regulated 4) and may play a role in the biological process of muscle breakdown. MTMR4 contains an N-terminal PH-GRAM (PH-G) domain, a MTM phosphatase domain, a coiled-coil region, and a C-terminal FYVE domain.

                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083 1283 VPVTHVMMCMNCGCDFSLTLRRHHCHACGKIVCRNCSRNKYPL--KYLKDRMaKVCDGCF 1340
Cdd:cd15733      2 VPDHAASHCFGCDCEFWLAKRKHHCRNCGNVFCADCSNYKLPIpdEQLYDPV-RVCNSCY 60

Phafin2 (also called EAPF, FLJ13187, ZFYVE18 or PLEKHF2) Pleckstrin Homology (PH) domain; Phafin2 is differentially expressed in the liver cancer cell and regulates the structure and function of the endosomes through Rab5-dependent processes. Phafin2 modulates the cell's response to extracellular stimulation by modulating the receptor density on the cell surface. Phafin2 contains a PH domain and a FYVE domain. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083 1132 ENLQKLVHIEHSVRGQGD-LLQPGREFLKEGTLMKVTGKNRRPRHLFLMNDVLLY---TYPQKdgKYRLKNTLAVANMKV 1207
Cdd:cd01218      4 ANRRRIAAVESCFGGSGQpLVKPGRVLVGEGVLTKVCRKKPKPRQFFLFNDILVYgsiVINKK--KYNKQRIIPLEDVKI 81

                           90       100       110
                   ....*....|....*....|....*....|....*.
gi 2217342083 1208 sRPVMEKVPY--ALKIETSESCLMLSASSCAERDEW 1241
Cdd:cd01218     82 -EDLEDTGELknGWQIISPKKSFVVYAATATEKSEW 116

FYVE domain found in protein containing both PH and FYVE domains 1 (phafin-1) and similar proteins; Phafin-1, also termed lysosome-associated apoptosis-inducing protein containing PH (pleckstrin homology) and FYVE domains (LAPF), or pleckstrin homology domain-containing family F member 1 (PKHF1), or PH domain-containing family F member 1, or apoptosis-inducing protein, or PH and FYVE domain-containing protein 1, or zinc finger FYVE domain-containing protein 15, is a representative of a novel family of PH and FYVE domain-containing proteins called phafins. It is a ubiquitously expressed pro-apoptotic protein via translocating to lysosomes, facilitating apoptosis induction through a lysosomal-mitochondrial apoptotic pathway.

                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 2217342083 1283 VPVTHVMMCMNCG-CDFSLTLRRHHCHACGKIVCRNCSRNKYPLKYLKDRMAKVCDGCFGEL 1343
Cdd:cd15754      3 IPDKATDICMRCTqTNFSLLTRRHHCRKCGFVVCHECSRQRFLIPRLSPKPVRVCSLCYRKL 64

Pleckstrin homology domain; Domain commonly found in eukaryotic signalling proteins. The domain family possesses multiple functions including the abilities to bind inositol phosphates, and various proteins. PH domains have been found to possess inserted domains (such as in PLC gamma, syntrophins) and to be inserted within other domains. Mutations in Brutons tyrosine kinase (Btk) within its PH domain cause X-linked agammaglobulinaemia (XLA) in patients. Point mutations cluster into the positively charged end of the molecule around the predicted binding site for phosphatidylinositol lipids.

                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083  1157 FLKEGTLMKVTG---KNRRPRHLFLMNDVLL-YTYPQKDGKYRLKNTLAVANMKVSRPV---MEKVPYALKIETSE-SCL 1228
Cdd:smart00233    1 VIKEGWLYKKSGggkKSWKKRYFVLFNSTLLyYKSKKDKKSYKPKGSIDLSGCTVREAPdpdSSKKPHCFEIKTSDrKTL 80

                            90       100
                    ....*....|....*....|.
gi 2217342083  1229 MLSASSCAERDEWYGCLSRAL 1249
Cdd:smart00233   81 LLQAESEEEREKWVEALRKAI 101

FYVE domain found in FYVE and coiled-coil domain-containing protein 1 (FYCO1) and similar proteins; FYCO1, also termed zinc finger FYVE domain-containing protein 7, is a phosphatidylinositol 3-phosphate (PtdIns3P or PI3P)-binding protein that is associated with the exterior of autophagosomes and mediates microtubule plus-end-directed vesicle transport. It acts as an effector of GTP-bound Rab7, a GTPase that recruits FYCO1 to autophagosomes and has been implicated in autophagosome-lysosomal fusion. FYCO1 also interacts with two microtubule motor proteins, kinesin (KIF) 5B and KIF23, and thus functions as a platform for assembly of vesicle fusion and trafficking factors. FYCO1 contains an N-terminal alpha-helical RUN domain followed by a long central coiled-coil region, a FYVE domain and a GOLD (Golgi dynamics) domain in C-terminus.

                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 2217342083 1285 VTHvmmCMNCGCDFSLTLRRHHCHACGKIVCRNCSRNkYPLKYLKDRMAKVCDGCF 1340
Cdd:cd15726      7 VTH---CLDCKSEFSWMVRRHHCRLCGRIFCYACSNF-YVLTAHGGKKERCCKACF 58

FERM, RhoGEF and pleckstrin domain-containing protein 1 and related proteins Pleckstrin Homology (PH) domain, repeat 2; Members here include FARP1 (also called Chondrocyte-derived ezrin-like protein; PH domain-containing family C member 2), FARP2 (also called FIR/FERM domain including RhoGEF; FGD1-related Cdc42-GEF/FRG), and FARP6 (also called Zinc finger FYVE domain-containing protein 24). They are members of the Dbl family guanine nucleotide exchange factors (GEFs) which are upstream positive regulators of Rho GTPases. Little is known about FARP1 and FARP6, though FARP1 has increased expression in differentiated chondrocytes. FARP2 is thought to regulate neurite remodeling by mediating the signaling pathways from membrane proteins to Rac. It is found in brain, lung, and testis, as well as embryonic hippocampal and cortical neurons. FARP1 and FARP2 are composed of a N-terminal FERM domain, a proline-rich (PR) domain, Dbl-homology (DH), and two C-terminal PH domains. FARP6 is composed of Dbl-homology (DH), and two C-terminal PH domains separated by a FYVE domain. This hierarchy contains the second PH repeat. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083 1411 ISGYLSRCKRGKRHWKKLWFVIKGKVLYTYMASEDKVALESMPLLGFTIAPEKEEGSSEVGPIFHLyHKKTLFYSFKAED 1490
Cdd:cd13235      5 MSGYLLRKFKNSNGWQKLWVVFTNFCLFFYKSHQDEFPLASLPLLGYSVGLPSEADNIDKDYVFKL-QFKSHVYFFRAES 83

                           90
                   ....*....|....*
gi 2217342083 1491 TNSAQRWIEAMEDAS 1505
Cdd:cd13235     84 EYTFERWMEVIRSAT 98

FYVE, RhoGEF and PH domain containing/faciogenital dysplasia protein 4 pleckstrin homology (PH) domain, C-terminus, in insect and related arthropods; In general, FGDs have a RhoGEF (DH) domain, followed by an N-terminal PH domain, a FYVE domain and a C-terminal PH domain. All FGDs are guanine nucleotide exchange factors that activates the Rho GTPase Cdc42, an important regulator of membrane trafficking. The RhoGEF domain is responsible for GEF catalytic activity, while the N-terminal PH domain is involved in intracellular targeting of the DH domain. FGD4 is one of the genes associated with Charcot-Marie-Tooth neuropathy type 4 (CMT4), a group of progressive motor and sensory axonal and demyelinating neuropathies that are distinguished from other forms of CMT by autosomal recessive inheritance. Those affected have distal muscle weakness and atrophy associated with sensory loss and, frequently, pes cavus foot deformity. This cd contains insects, crustaceans, and chelicerates. PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083 1411 ISGYLSRCKRGKRHWKKLWFVIKGK-VLYTYMASEDKVALESMPLLGFTIApEKEEGSSEVGPI-------FHLYHKKTL 1482
Cdd:cd13238      1 LSGYLKLKTNGRKTWSRRWFALQPDfVLYSYKSQEDKLPLTATPVPGFLVT-LLEKGSAVDPLNdpkrprtFKMFHVKKS 79

                           90
                   ....*....|....*....
gi 2217342083 1483 FYsFKAEDTNSAQRWIEAM 1501
Cdd:cd13238     80 YY-FQANDGDEQKKWVLTL 97

Pleckstrin homology (PH) domain; PH domains have diverse functions, but in general are involved in targeting proteins to the appropriate cellular location or in the interaction with a binding partner. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. Less than 10% of PH domains bind phosphoinositide phosphates (PIPs) with high affinity and specificity. PH domains are distinguished from other PIP-binding domains by their specific high-affinity binding to PIPs with two vicinal phosphate groups: PtdIns(3,4)P2, PtdIns(4,5)P2 or PtdIns(3,4,5)P3 which results in targeting some PH domain proteins to the plasma membrane. A few display strong specificity in lipid binding. Any specificity is usually determined by loop regions or insertions in the N-terminus of the domain, which are not conserved across all PH domains. PH domains are found in cellular signaling proteins such as serine/threonine kinase, tyrosine kinases, regulators of G-proteins, endocytotic GTPases, adaptors, as well as cytoskeletal associated molecules and in lipid associated enzymes.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2217342083 1411 ISGYLS-RCKRGKRHWKKLWFVIKGKVLYTYMASED--KVALESMPLLGftIAPEKEEGSSEVGPIFHLYHKKTLFYSFK 1487
Cdd:cd00821      1 KEGYLLkRGGGGLKSWKKRWFVLFEGVLLYYKSKKDssYKPKGSIPLSG--ILEVEEVSPKERPHCFELVTPDGRTYYLQ 78

                           90
                   ....*....|....
gi 2217342083 1488 AEDTNSAQRWIEAM 1501
Cdd:cd00821     79 ADSEEERQEWLKAL 92

FYVE domain found in FYVE domain-containing protein 26 (ZFY26 or ZFYVE26); ZFY26, also termed FYVE domain-containing centrosomal protein (FYVE-CENT), or spastizin, is a phosphatidylinositol 3-phosphate (PtdIns3P or PI3P) binding protein that localizes to the centrosome and midbody. ZFY26 and its interacting partners TTC19 and KIF13A are required for cytokinesis. It also interacts with Beclin 1, a subunit of class III phosphatidylinositol 3-kinase complex, and may have potential implications for carcinogenesis. In addition, it has been considered as the causal agent of a rare form of hereditary spastic paraplegia. ZFY26 contains a FYVE domain that is important for targeting of FYVE-CENT to the midbody.

                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*....
gi 2217342083 1283 VPVTHVMMCMNCGCD-FSLTLRRHHCHACGKIVCRNCSRNKYPLKYLKDRMAKVCDGCF 1340
Cdd:cd15724      2 VPDEAVSVCMVCQVErFSMFNRRHHCRRCGRVVCSSCSTKKMLVEGYRENPVRVCDQCY 60

FYVE domain found in FYVE finger-containing Rab5 effector protein rabenosyn-5 (Rbsn-5) and similar proteins; Rbsn-5, also termed zinc finger FYVE domain-containing protein 20, is a novel Rab5 effector that is complexed to the Sec1-like protein VPS45 and recruited in a phosphatidylinositol-3-kinase-dependent fashion to early endosomes. It also binds to Rab4 and EHD1/RME-1, two regulators of the recycling route, and is involved in cargo recycling to the plasma membrane. Moreover, Rbsn-5 regulates endocytosis at the apical side of the wing epithelium and plays a role of the apical endocytic trafficking of Fmi in the establishment of planar cell polarity (PCP).

                           10        20        30
                   ....*....|....*....|....*....|..
gi 2217342083 1288 VMMCMNCGCDFSLTLRRHHCHACGKIVCRNCS 1319
Cdd:cd15716     10 VPFCPDCGKKFNLARRRHHCRLCGSIMCNKCS 41