WW domain; The WW domain is a protein module with two highly conserved tryptophans that binds proline-rich peptide motifs in vitro.

                           10        20        30
                   ....*....|....*....|....*....|
gi 1832466018   55 LPRGWEEGFSEEGASYFIDHNQQTTSFRHP 84
Cdd:pfam00397    1 LPPGWEERWDPDGRVYYYNHETGETQWEKP 30

Uncharacterized conserved protein YhaN, contains AAA domain [Function unknown];

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1832466018  710 EQDRILQDLEDKIRALKENKDQLESVLEVLHRQMDQYKDQPQHAEKISYQQRLLQEDLIHIRAEIS-KVSTEMENAWNEY 788
Cdd:COG4717    122 EKLLQLLPLYQELEALEAELAELPERLEELEERLEELRELEEELEELEAELAELQEELEELLEQLSlATEEELQDLAEEL 201

                           90       100       110       120
                   ....*....|....*....|....*....|....*....|....*...
gi 1832466018  789 LKLEKDVSQLKKALQEqmnsslVSQEKTQIQKDLWRIEDVTAGLSANK 836
Cdd:COG4717    202 EELQQRLAELEEELEE------AQEELEELEEELEQLENELEAAALEE 243

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 1832466018   164 VIVRGWLHKQDSSGMRLWKRRWFVLADYCLFYYKDSREE---SVLGSIPLPSYVISPVGPEDRINRKFSFKAEHTGMRTY 240
Cdd:smart00233    1 VIKEGWLYKKSGGGKKSWKKRYFVLFNSTLLYYKSKKDKksyKPKGSIDLSGCTVREAPDPDSSKKPHCFEIKTSDRKTL 80

                            90       100
                    ....*....|....*....|.
gi 1832466018   241 YFSADTQEDMNAWIRAMNQAA 261
Cdd:smart00233   81 LLQAESEEEREKWVEALRKAI 101

WW domain; The WW domain is a protein module with two highly conserved tryptophans that binds proline-rich peptide motifs in vitro.

                           10        20        30
                   ....*....|....*....|....*....|
gi 1832466018   55 LPRGWEEGFSEEGASYFIDHNQQTTSFRHP 84
Cdd:pfam00397    1 LPPGWEERWDPDGRVYYYNHETGETQWEKP 30

Uncharacterized conserved protein YhaN, contains AAA domain [Function unknown];

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1832466018  710 EQDRILQDLEDKIRALKENKDQLESVLEVLHRQMDQYKDQPQHAEKISYQQRLLQEDLIHIRAEIS-KVSTEMENAWNEY 788
Cdd:COG4717    122 EKLLQLLPLYQELEALEAELAELPERLEELEERLEELRELEEELEELEAELAELQEELEELLEQLSlATEEELQDLAEEL 201

                           90       100       110       120
                   ....*....|....*....|....*....|....*....|....*...
gi 1832466018  789 LKLEKDVSQLKKALQEqmnsslVSQEKTQIQKDLWRIEDVTAGLSANK 836
Cdd:COG4717    202 EELQQRLAELEEELEE------AQEELEELEEELEQLENELEAAALEE 243

Domain with 2 conserved Trp (W) residues; Also known as the WWP or rsp5 domain. Binds proline-rich polypeptides.

                            10        20        30
                    ....*....|....*....|....*....|..
gi 1832466018    54 DLPRGWEEGFSEEGASYFIDHNQQTTSFRHPV 85
Cdd:smart00456    1 PLPPGWEERKDPDGRPYYYNHETKETQWEKPR 32

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.

                           10        20
                   ....*....|....*....|....*....
gi 1832466018   12 EHWSygvcRDGRVFFIDDLTRTTTWLHPR 40
Cdd:cd00201      6 ERWD----PDGRVYYYNHNTKETQWEDPR 30

septation ring formation regulator EzrA; Provisional

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1832466018  635 ADDTYIQLKKDLEYLDLKIENngplINMIYKVLKNSAQGLLSSIhvtgRDTLKERSTKPVKIAESDIDVKLSVFCEQ-DR 713
Cdd:PRK04778   196 AREILDQLEEELAALEQIMEE----IPELLKELQTELPDQLQEL----KAGYRELVEEGYHLDHLDIEKEIQDLKEQiDE 267

                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1832466018  714 ILQDL--------EDKIRALKENKDQLESVLE-------VLHRQMDQYKDQPQHAEKISYQqrlLQEDLIHIRA--EISk 776
Cdd:PRK04778   268 NLALLeeldldeaEEKNEEIQERIDQLYDILErevkarkYVEKNSDTLPDFLEHAKEQNKE---LKEEIDRVKQsyTLN- 343

                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1832466018  777 vSTEMENawneYLKLEKDVSQLKKALQE-QMNssLVSQEK--TQIQKDLWRIEDVTAGLSANKANYKTIVDSIKNPE--- 850
Cdd:PRK04778   344 -ESELES----VRQLEKQLESLEKQYDEiTER--IAEQEIaySELQEELEEILKQLEEIEKEQEKLSEMLQGLRKDElea 416

                          250       260
                   ....*....|....*....|....*....
gi 1832466018  851 RKTVPSFSQ-----------SSVPSLPAS 868
Cdd:PRK04778   417 REKLERYRNklheikrylekSNLPGLPED 445

The F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs) domain of Fes (feline sarcoma) and Fer (Fes related) tyrosine kinases; F-BAR domains are dimerization modules that bind and bend membranes and are found in proteins involved in membrane dynamics and actin reorganization. Fes (feline sarcoma), also called Fps (Fujinami poultry sarcoma), and Fer (Fes related) are cytoplasmic (or nonreceptor) tyrosine kinases that play roles in haematopoiesis, inflammation and immunity, growth factor signaling, cytoskeletal regulation, cell migration and adhesion, and the regulation of cell-cell interactions. Although Fes and Fer show redundancy in their biological functions, they show differences in their expression patterns. Fer is ubiquitously expressed while Fes is expressed predominantly in myeloid and endothelial cells. Fes and Fer contain an N-terminal F-BAR domain, an SH2 domain, and a C-terminal catalytic kinase domain. F-BAR domains form banana-shaped dimers with a positively-charged concave surface that binds to negatively-charged lipid membranes. They can induce membrane deformation in the form of long tubules. The F-BAR domain of Fes is critical in its role in microtubule nucleation and bundling.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1832466018  714 ILQDLEDKIRALKENKDQLESVleVLHRQMDQYKDQpQHAEKiSYQQRLLQedlihIRAEISKVSTEMENAWNEYLKLEK 793
Cdd:cd07657     70 IMDSTDQLSKLIKQHAEALESG--TLDKLTLLIKDK-RKAKK-AYQEERQQ-----IDEQYKKLTDEVEKLKSEYQKLLE 140

                           90       100
                   ....*....|....*....|....*...
gi 1832466018  794 DVSQLKKALQEQMNSSLVSQEKTQIQKD 821
Cdd:cd07657    141 DYKAAKSKFEEAVVKGGRGGRKLDKARD 168

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 1832466018   164 VIVRGWLHKQDSSGMRLWKRRWFVLADYCLFYYKDSREE---SVLGSIPLPSYVISPVGPEDRINRKFSFKAEHTGMRTY 240
Cdd:smart00233    1 VIKEGWLYKKSGGGKKSWKKRYFVLFNSTLLYYKSKKDKksyKPKGSIDLSGCTVREAPDPDSSKKPHCFEIKTSDRKTL 80

                            90       100
                    ....*....|....*....|.
gi 1832466018   241 YFSADTQEDMNAWIRAMNQAA 261
Cdd:smart00233   81 LLQAESEEEREKWVEALRKAI 101

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 1832466018  168 GWLHKQDSSGMRLWKRRWFVLADYCLFYYKDSREESV--LGSIPLPSYVisPVGPEDRINRKFSFKAEHTGMRTYYFSAD 245
Cdd:cd00821      3 GYLLKRGGGGLKSWKKRWFVLFEGVLLYYKSKKDSSYkpKGSIPLSGIL--EVEEVSPKERPHCFELVTPDGRTYYLQAD 80

                           90
                   ....*....|..
gi 1832466018  246 TQEDMNAWIRAM 257
Cdd:cd00821     81 SEEERQEWLKAL 92

Arabidopsis thaliana Pleckstrin homolog (PH) 1 (AtPH1) PH domain; AtPH1 is expressed in all plant tissue and is proposed to be the plant homolog of human pleckstrin. Pleckstrin consists of two PH domains separated by a linker region, while AtPH has a single PH domain with a short N-terminal extension. AtPH1 binds PtdIns3P specifically and is thought to be an adaptor molecule since it has no obvious catalytic functions. 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 1832466018  168 GWLHKQdSSGMRLWKRRWFVLADYCLFYYKDS---REESVLGSIPLpSYVISPVGPEDRINRKFSFKAEhTGMRTYYFSA 244
Cdd:cd13276      3 GWLEKQ-GEFIKTWRRRWFVLKQGKLFWFKEPdvtPYSKPRGVIDL-SKCLTVKSAEDATNKENAFELS-TPEETFYFIA 79

                           90       100
                   ....*....|....*....|...
gi 1832466018  245 DTQEDMNAWIRAMNQAALMQTRS 267
Cdd:cd13276     80 DNEKEKEEWIGAIGRAIVKHSRS 102

Connector enhancer of KSR (Kinase suppressor of ras) (CNK) pleckstrin homology (PH) domain; CNK family members function as protein scaffolds, regulating the activity and the subcellular localization of RAS activated RAF. There is a single CNK protein present in Drosophila and Caenorhabditis elegans in contrast to mammals which have 3 CNK proteins (CNK1, CNK2, and CNK3). All of the CNK members contain a sterile a motif (SAM), a conserved region in CNK (CRIC) domain, and a PSD-95/DLG-1/ZO-1 (PDZ) domain, and a PH domain. A CNK2 splice variant CNK2A also has a PDZ domain-binding motif at its C terminus and Drosophila CNK (D-CNK) also has a domain known as the Raf-interacting region (RIR) that mediates binding of the Drosophila Raf kinase. This cd contains CNKs from insects, spiders, mollusks, and nematodes. 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 1832466018  168 GWLH---KQDSSGMRlWKRRWFVLADYCLFYYKDSREESVLGSIPLPSYVISPvGPEDRiNRKFSFKAEHTGMrTYYFSA 244
Cdd:cd13326      3 GWLYqrrRKGKGGGK-WAKRWFVLKGSNLYGFRSQESTKADCVIFLPGFTVSP-APEVK-SRKYAFKVYHTGT-VFYFAA 78

                           90
                   ....*....|...
gi 1832466018  245 DTQEDMNAWIRAM 257
Cdd:cd13326     79 ESQEDMKKWLDLL 91

General Receptor for Phosphoinositides-1-like Pleckstrin homology (PH) domain; GRP1/cytohesin3 and the related proteins ARNO (ARF nucleotide-binding site opener)/cytohesin-2 and cytohesin-1 are ARF exchange factors that contain a pleckstrin homology (PH) domain thought to target these proteins to cell membranes through binding polyphosphoinositides. The PH domains of all three proteins exhibit relatively high affinity for PtdIns(3,4,5)P3. Within the Grp1 family, diglycine (2G) and triglycine (3G) splice variants, differing only in the number of glycine residues in the PH domain, strongly influence the affinity and specificity for phosphoinositides. The 2G variants selectively bind PtdIns(3,4,5)P3 with high affinity,the 3G variants bind PtdIns(3,4,5)P3 with about 30-fold lower affinity and require the polybasic region for plasma membrane targeting. These ARF-GEFs share a common, tripartite structure consisting of an N-terminal coiled-coil domain, a central domain with homology to the yeast protein Sec7, a PH domain, and a C-terminal polybasic region. The Sec7 domain is autoinhibited by conserved elements proximal to the PH domain. GRP1 binds to the DNA binding domain of certain nuclear receptors (TRalpha, TRbeta, AR, ER, but not RXR), and can repress thyroid hormone receptor (TR)-mediated transactivation by decreasing TR-complex formation on thyroid hormone response elements. ARNO promotes sequential activation of Arf6, Cdc42 and Rac1 and insulin secretion. Cytohesin acts as a PI 3-kinase effector mediating biological responses including cell spreading and adhesion, chemotaxis, protein trafficking, and cytoskeletal rearrangements, only some of which appear to depend on their ability to activate ARFs. 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 1832466018  168 GWLHKQdSSGMRLWKRRWFVLADYCLFYYKDSREESVLGSIPLPSYVISPVgpEDRiNRKFSF-----------KA---- 232
Cdd:cd01252      7 GWLLKL-GGRVKSWKRRWFILTDNCLYYFEYTTDKEPRGIIPLENLSVREV--EDK-KKPFCFelyspsngqviKAcktd 82

                           90       100       110
                   ....*....|....*....|....*....|....*.
gi 1832466018  233 --------EHTgmrTYYFSADTQEDMNAWIRAMNQA 260
Cdd:cd01252     83 sdgkvvegNHT---VYRISAASEEERDEWIKSIKAS 115

Tandem PH-domain-containing proteins 1 and 2 Pleckstrin homology (PH) domain, C-terminal repeat; The binding of TAPP1 (also called PLEKHA1/pleckstrin homology domain containing, family A (phosphoinositide binding specific) member 1) and TAPP2 (also called PLEKHA2) adaptors to PtdIns(3,4)P(2), but not PI(3,4, 5)P3, function as negative regulators of insulin and PI3K signalling pathways (i.e. TAPP/utrophin/syntrophin complex). TAPP1 and TAPP2 contain two sequential PH domains in which the C-terminal PH domain specifically binds PtdIns(3,4)P2 with high affinity. The N-terminal PH domain does not interact with any phosphoinositide tested. They also contain a C-terminal PDZ-binding motif that interacts with several PDZ-binding proteins, including PTPN13 (known previously as PTPL1 or FAP-1) as well as the scaffolding proteins MUPP1 (multiple PDZ-domain-containing protein 1), syntrophin and utrophin. 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 1832466018  157 RRNPNVPVIVRGWLHKQDSSgMRLWKRRWFVLADYCLFYYKDSREESVLGSIPLPSyvISPVG---PEDRINRKFSFKAE 233
Cdd:cd13271      1 RQRAGRNVIKSGYCVKQGAV-RKNWKRRFFILDDNTISYYKSETDKEPLRTIPLRE--VLKVHeclVKSLLMRDNLFEII 77

                           90       100       110       120
                   ....*....|....*....|....*....|....*....|
gi 1832466018  234 hTGMRTYYFSADTQEDMNAWIRAMNQAalMQTRSSLKRET 273
Cdd:cd13271     78 -TTSRTFYIQADSPEEMHSWIKAISGA--IVARRGPSRSS 114

ArfGAP with coiled-coil, ankyrin repeat and PH domains Pleckstrin homology (PH) domain; ACAP (also called centaurin beta) functions both as a Rab35 effector and as an Arf6-GTPase-activating protein (GAP) by which it controls actin remodeling and membrane trafficking. ACAP contain an NH2-terminal bin/amphiphysin/Rvs (BAR) domain, a phospholipid-binding domain, a PH domain, a GAP domain, and four ankyrin repeats. The AZAPs constitute a family of Arf GAPs that are characterized by an NH2-terminal pleckstrin homology (PH) domain and a central Arf GAP domain followed by two or more ankyrin repeats. On the basis of sequence and domain organization, the AZAP family is further subdivided into four subfamilies: 1) the ACAPs contain an NH2-terminal bin/amphiphysin/Rvs (BAR) domain (a phospholipid-binding domain that is thought to sense membrane curvature), a single PH domain followed by the GAP domain, and four ankyrin repeats; 2) the ASAPs also contain an NH2-terminal BAR domain, the tandem PH domain/GAP domain, three ankyrin repeats, two proline-rich regions, and a COOH-terminal Src homology 3 domain; 3) the AGAPs contain an NH2-terminal GTPase-like domain (GLD), a split PH domain, and the GAP domain followed by four ankyrin repeats; and 4) the ARAPs contain both an Arf GAP domain and a Rho GAP domain, as well as an NH2-terminal sterile-a motif (SAM), a proline-rich region, a GTPase-binding domain, and five PH domains. PMID 18003747 and 19055940 Centaurin can bind to phosphatidlyinositol (3,4,5)P3. 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 1832466018  168 GWLHKQDSSGMRLWKRRWFVLADYCLFYYKDSREEsvlgsiPLPSYV----ISPVGPEDRINRKFSFKAEhTGMRTYYFS 243
Cdd:cd13250      3 GYLFKRSSNAFKTWKRRWFSLQNGQLYYQKRDKKD------EPTVMVedlrLCTVKPTEDSDRRFCFEVI-SPTKSYMLQ 75

                           90
                   ....*....|....*
gi 1832466018  244 ADTQEDMNAWIRAMN 258
Cdd:cd13250     76 AESEEDRQAWIQAIQ 90

Boi family Pleckstrin homology domain; Yeast Boi proteins Boi1 and Boi2 are functionally redundant and important for cell growth with Boi mutants displaying defects in bud formation and in the maintenance of cell polarity.They appear to be linked to Rho-type GTPase, Cdc42 and Rho3. Boi1 and Boi2 display two-hybrid interactions with the GTP-bound ("active") form of Cdc42, while Rho3 can suppress of the lethality caused by deletion of Boi1 and Boi2. These findings suggest that Boi1 and Boi2 are targets of Cdc42 that promote cell growth in a manner that is regulated by Rho3. Boi proteins contain a N-terminal SH3 domain, followed by a SAM (sterile alpha motif) domain, a proline-rich region, which mediates binding to the second SH3 domain of Bem1, and C-terminal PH domain. The PH domain is essential for its function in cell growth and is important for localization to the bud, while the SH3 domain is needed for localization to the neck. 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 1832466018  168 GWLHKQdSSGMRLWKRRWFVLADYCLFYYKDSREESVLGSIPLPSYVISPVGPEDRINRKFSFKAEH-TGMRTYYFSADT 246
Cdd:cd13316      4 GWMKKR-GERYGTWKTRYFVLKGTRLYYLKSENDDKEKGLIDLTGHRVVPDDSNSPFRGSYGFKLVPpAVPKVHYFAVDE 82

                           90
                   ....*....|....
gi 1832466018  247 QEDMNAWIRAMNQA 260
Cdd:cd13316     83 KEELREWMKALMKA 96

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 1832466018  168 GWLHKQDSSGmRLWKRRWFVLADYCLFYYKDSREESVLGSIPLPSYVISPVGPEDRINRKFSFKAEHTGMRTYYFSADTQ 247
Cdd:cd13237      3 GYLQRRKKSK-KSWKRLWFVLKDKVLYTYKASEDVVALESVPLLGFTVVTIDESFEEDESLVFQLLHKGQLPIIFRADDA 81

                           90
                   ....*....|
gi 1832466018  248 EDMNAWIRAM 257
Cdd:cd13237     82 ETAQRWIEAL 91

Sesquipedalian family Pleckstrin homology (PH) domain; The sesquipedalian family has 2 mammalian members: Ses1 and Ses2, which are also callled 7 kDa inositol polyphosphate phosphatase-interacting protein 1 and 2. They play a role in endocytic trafficking and are required for receptor recycling from endosomes, both to the trans-Golgi network and the plasma membrane. Members of this family form homodimers and heterodimers. Sesquipedalian interacts with inositol polyphosphate 5-phosphatase OCRL-1 (INPP5F) also known as Lowe oculocerebrorenal syndrome protein, a phosphatase enzyme that is involved in actin polymerization and is found in the trans-Golgi network and INPP5B. Sesquipedalian contains a single 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 1832466018  161 NVPVIVRGWLHKQDSSGmRLWKRRWFVLADYCLFYY--KDSREEsvLGSIPLPSYVISPVGPEDRInrKFSFKAEHTGMR 238
Cdd:cd13288      5 NSPVDKEGYLWKKGERN-TSYQKRWFVLKGNLLFYFekKGDREP--LGVIVLEGCTVELAEDAEPY--AFAIRFDGPGAR 79

                           90       100
                   ....*....|....*....|..
gi 1832466018  239 TYYFSADTQEDMNAWIRAMNQA 260
Cdd:cd13288     80 SYVLAAENQEDMESWMKALSRA 101

Myosin X Pleckstrin homology (PH) domain, repeat 2; MyoX, a MyTH-FERM myosin, is a molecular motor that has crucial functions in the transport and/or tethering of integrins in the actin-based extensions known as filopodia, microtubule binding, and in netrin-mediated axon guidance. It functions as a dimer. MyoX walks on bundles of actin, rather than single filaments, unlike the other unconventional myosins. MyoX is present in organisms ranging from humans to choanoflagellates, but not in Drosophila and Caenorhabditis elegans.MyoX consists of a N-terminal motor/head region, a neck made of 3 IQ motifs, and a tail consisting of a coiled-coil domain, a PEST region, 3 PH domains, a myosin tail homology 4 (MyTH4), and a FERM domain at its very C-terminus. The first PH domain in the MyoX tail is a split-PH domain, interupted by the second PH domain such that PH 1a and PH 1b flanks PH 2. The third PH domain (PH 3) follows the PH 1b domain. This cd 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 1832466018  168 GWLHKQ--DSSGM--RLWKRRWFVLADYCLFYYK-DSREESVLGSIPLPS-YVISPVGPEDriNRkFSFKaehTGMRTYY 241
Cdd:cd13296      3 GWLTKKggGSSTLsrRNWKSRWFVLRDTVLKYYEnDQEGEKLLGTIDIRSaKEIVDNDPKE--NR-LSIT---TEERTYH 76

                           90
                   ....*....|....*...
gi 1832466018  242 FSADTQEDMNAWIRAMNQ 259
Cdd:cd13296     77 LVAESPEDASQWVNVLTR 94

Rho GTPase activating protein 24 Pleckstrin homology (PH) domain; RhoGap24 (also called ARHGAP24, p73RhoGAp, and Filamin-A-associated RhoGAP) like other RhoGAPs are involved in cell polarity, cell morphology and cytoskeletal organization. They act as GTPase activators for the Rac-type GTPases by converting them to an inactive GDP-bound state and control actin remodeling by inactivating Rac downstream of Rho leading to suppress leading edge protrusion and promotes cell retraction to achieve cellular polarity and are able to suppress RAC1 and CDC42 activity in vitro. Overexpression of these proteins induces cell rounding with partial or complete disruption of actin stress fibers and formation of membrane ruffles, lamellipodia, and filopodia. Members here contain an N-terminal PH domain followed by a RhoGAP domain and either a BAR or TATA Binding Protein (TBP) Associated Factor 4 (TAF4) 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 1832466018  168 GWLHKQdSSGMRLWKRRWFVLADYCLFYYKDSREESVLGSIPLPSYVISPVGPEDRINRKFSFKAEHTGMR--------T 239
Cdd:cd13379      7 GWLRKQ-GGFVKTWHTRWFVLKGDQLYYFKDEDETKPLGTIFLPGNRVTEHPCNEEEPGKFLFEVVPGGDRermtanheT 85

                           90       100
                   ....*....|....*....|
gi 1832466018  240 YYFSADTQEDMNAWIRAMNQ 259
Cdd:cd13379     86 YLLMASTQNDMEDWVKSIRR 105

FYVE, RhoGEF and PH domain containing/faciogenital dysplasia proteins pleckstrin homology (PH) domain, C-terminus; 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. Not much is known about FGD2. FGD1 is the best characterized member of the group with mutations here leading to the X-linked disorder known as faciogenital dysplasia (FGDY). Both FGD1 and FGD3 are targeted by the ubiquitin ligase SCF(FWD1/beta-TrCP) upon phosphorylation of two serine residues in its DSGIDS motif and subsequently degraded by the proteasome. However, FGD1 and FGD3 induced significantly different morphological changes in HeLa Tet-Off cells and while FGD1 induced long finger-like protrusions, FGD3 induced broad sheet-like protrusions when the level of GTP-bound Cdc42 was significantly increased by the inducible expression of FGD3. They also reciprocally regulated cell motility in inducibly expressed in HeLa Tet-Off cells, FGD1 stimulated cell migration while FGD3 inhibited it. FGD1 and FGD3 therefore play different roles to regulate cellular functions, even though their intracellular levels are tightly controlled by the same destruction pathway through SCF(FWD1/beta-TrCP). 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. 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 1832466018  165 IVRGWLHKQDSSgmRLWKRRWFVLAD---YCLFYYKDSREESVLGSIPLPSYVISPVGPEDRINRKFSFKAEHTGmRTYY 241
Cdd:cd13236      9 LLCGFLQYSEKG--KTWQKVWCVIPRtepLVLYLYGAPQDVRAQRTIPLPGCEVTVPPPEERLDGRHVFKLSQSK-QSHY 85

                           90       100
                   ....*....|....*....|
gi 1832466018  242 FSADTQEDMNAWIRAMNQAA 261
Cdd:cd13236     86 FSAESEELQQRWLEALSRAA 105

Myosin phosphatase-RhoA Interacting Protein Pleckstrin homology (PH) domain; M-RIP is proposed to play a role in myosin phosphatase regulation by RhoA. M-RIP contains 2 PH domains followed by a Rho binding domain (Rho-BD), and a C-terminal myosin binding subunit (MBS) binding domain (MBS-BD). The amino terminus of M-RIP with its adjacent PH domains and polyproline motifs mediates binding to both actin and Galpha. M-RIP brings RhoA and MBS into close proximity where M-RIP can target RhoA to the myosin phosphatase complex to regulate the myosin phosphorylation state. M-RIP does this via its C-terminal coiled-coil domain which interacts with the MBS leucine zipper domain of myosin phosphatase, while its Rho-BD, directly binds RhoA in a nucleotide-independent manner. 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 1832466018  167 RGWLHKQDSSGMRlWKRRWFVLADYCLFYYKDS--REESVL-GSIPLPSyvISPVGPEDrINRKFSFKAEHTGMRTYYFS 243
Cdd:cd13275      2 KGWLMKQGSRQGE-WSKHWFVLRGAALKYYRDPsaEEAGELdGVIDLSS--CTEVTELP-VSRNYGFQVKTWDGKVYVLS 77

                           90
                   ....*....|....*...
gi 1832466018  244 ADTQEDMNAWIRAMNQAA 261
Cdd:cd13275     78 AMTSGIRTNWIQALRKAA 95

ArfGAP with RhoGAP domain, ankyrin repeat and PH domain Pleckstrin homology (PH) domain, repeat 1; ARAP proteins (also called centaurin delta) are phosphatidylinositol 3,4,5-trisphosphate-dependent GTPase-activating proteins that modulate actin cytoskeleton remodeling by regulating ARF and RHO family members. They bind phosphatidylinositol 3,4,5-trisphosphate (PtdIns(3,4,5)P3) and phosphatidylinositol 3,4-bisphosphate (PtdIns(3,4,5)P2) binding. There are 3 mammalian ARAP proteins: ARAP1, ARAP2, and ARAP3. All ARAP proteins contain a N-terminal SAM (sterile alpha motif) domain, 5 PH domains, an ArfGAP domain, 2 ankyrin domain, A RhoGap domain, and a Ras-associating domain. This hierarchy contains the first PH domain in ARAP. 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 1832466018  168 GWLHKQDSSG-MRLWKRRWFVLADYCLFYYKDSREESVLGSIPLPSY-VISPVGpedriNRKFSFkaeHTGMRTYYFSAD 245
Cdd:cd13253      4 GYLDKQGGQGnNKGFQKRWVVFDGLSLRYFDSEKDAYSKRIIPLSAIsTVRAVG-----DNKFEL---VTTNRTFVFRAE 75

                           90
                   ....*....|....*....
gi 1832466018  246 TQEDMNAWIRAMNQAALMQ 264
Cdd:cd13253     76 SDDERNLWCSTLQAAISEY 94

KIFIA and KIFIB protein pleckstrin homology (PH) domain; The kinesin-3 family motors KIFIA (Caenorhabditis elegans homolog unc-104) and KIFIB transport synaptic vesicle precursors that contain synaptic vesicle proteins, such as synaptophysin, synaptotagmin and the small GTPase RAB3A, but they do not transport organelles that contain plasma membrane proteins. They have a N-terminal motor domain, followed by a coiled-coil domain, and a C-terminal PH domain. KIF1A adopts a monomeric form in vitro, but acts as a processive dimer in vivo. KIF1B has alternatively spliced isoforms distinguished by the presence or absence of insertion sequences in the conserved amino-terminal region of the protein; this results in their different motor activities. KIF1A and KIF1B bind to RAB3 proteins through the adaptor protein mitogen-activated protein kinase (MAPK) -activating death domain (MADD; also calledDENN), which was first identified as a RAB3 guanine nucleotide exchange factor (GEF). 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 1832466018  157 RRNPNVpvIVRGWLHKQDSSGMRlWKRRWFVLADYCLFYYKDSREESVLGSIPLPSYVI--SPvGPEDRINRKFSFkAEH 234
Cdd:cd01233      1 PKSPVV--SKRGYLLFLEDATDG-WVRRWVVLRRPYLHIYSSEKDGDERGVINLSTARVeySP-DQEALLGRPNVF-AVY 75

                           90       100
                   ....*....|....*....|....*
gi 1832466018  235 TGMRTYYFSADTQEDMNAWIRAMNQ 259
Cdd:cd01233     76 TPTNSYLLQARSEKEMQDWLYAIDP 100

ArfGAP with dual PH domains Pleckstrin homology (PH) domain, repeat 2; ADAP (also called centaurin alpha) is a phophatidlyinositide binding protein consisting of an N-terminal ArfGAP domain and two PH domains. In response to growth factor activation, PI3K phosphorylates phosphatidylinositol 4,5-bisphosphate to phosphatidylinositol 3,4,5-trisphosphate. Centaurin alpha 1 is recruited to the plasma membrane following growth factor stimulation by specific binding of its PH domain to phosphatidylinositol 3,4,5-trisphosphate. Centaurin alpha 2 is constitutively bound to the plasma membrane since it binds phosphatidylinositol 4,5-bisphosphate and phosphatidylinositol 3,4,5-trisphosphate with equal affinity. This cd contains the second PH domain 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 1832466018  168 GWLHKqdsSGMRL---WKRRWFVLADYCLFYYKDSREESVLGSIPLPS----YVIS---PVGPEDRINRKFSFkaeHTGM 237
Cdd:cd01251      6 GYLEK---TGPKQtdgFRKRWFTLDDRRLMYFKDPLDAFPKGEIFIGSkeegYSVReglPPGIKGHWGFGFTL---VTPD 79

                           90       100
                   ....*....|....*....|...
gi 1832466018  238 RTYYFSADTQEDMNAWIRAMNQA 260
Cdd:cd01251     80 RTFLLSAETEEERREWITAIQKV 102

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 1832466018  175 SSGMRLWKRRWFVL-ADYCLFYYKDSREESVLGSIPLPSYVI------SPVGPEDRINRKFSFKAEHTgMRTYYFSADTQ 247
Cdd:cd13238      9 TNGRKTWSRRWFALqPDFVLYSYKSQEDKLPLTATPVPGFLVtllekgSAVDPLNDPKRPRTFKMFHV-KKSYYFQANDG 87

                           90
                   ....*....|
gi 1832466018  248 EDMNAWIRAM 257
Cdd:cd13238     88 DEQKKWVLTL 97

Pleckstrin homology (PH) domain; Budding yeast contain two main p21-activated kinases (PAKs), Cla4 and Ste20. The yeast Ste20 protein kinase is involved in pheromone response, though the function of Ste20 mammalian homologs is unknown. Cla4 is involved in budding and cytokinesis and interacts with Cdc42, a GTPase required for polarized cell growth as is Pak. Cla4 and Ste20 kinases share a function in localizing cell growth with respect to the septin ring. They both contain a PH domain, a Cdc42/Rac interactive binding (CRIB) domain, and a C-terminal Protein Kinase catalytic (PKc) 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 1832466018  164 VIVRGWLH-KQDSSGMRLWKRRWFVLADYCLFYYKDSREESVLGSIPLpsYVISPVGPEDriNRKFSFKAEH-TGMRTYY 241
Cdd:cd13279      1 VVKSGWVSvKEDGLLSFRWSKRYLVLREQSLDFYKNESSSSASLSIPL--KDISNVSRTD--LKPYCFEIVRkSSTKSIY 76

                           90
                   ....*....|...
gi 1832466018  242 FSADTQEDMNAWI 254
Cdd:cd13279     77 ISVKSDDELYDWM 89

Evectin Pleckstrin homology (PH) domain; There are 2 members of the evectin family (also called pleckstrin homology domain containing, family B): evt-1 (also called PLEKHB1) and evt-2 (also called PLEKHB2). evt-1 is specific to the nervous system, where it is expressed in photoreceptors and myelinating glia. evt-2 is widely expressed in both neural and nonneural tissues. Evectins possess a single N-terminal PH domain and a C-terminal hydrophobic region. evt-1 is thought to function as a mediator of post-Golgi trafficking in cells that produce large membrane-rich organelles. It is a candidate gene for the inherited human retinopathy autosomal dominant familial exudative vitreoretinopathy and a susceptibility gene for multiple sclerosis. evt-2 is essential for retrograde endosomal membrane transport from the plasma membrane (PM) to the Golgi. Two membrane trafficking pathways pass through recycling endosomes: a recycling pathway and a retrograde pathway that links the PM to the Golgi/ER. Its PH domain that is unique in that it specifically recognizes phosphatidylserine (PS), but not polyphosphoinositides. PS is an anionic phospholipid class in eukaryotic biomembranes, is highly enriched in the PM, and plays key roles in various physiological processes such as the coagulation cascade, recruitment and activation of signaling molecules, and clearance of apoptotic cells. PH domains are only found in eukaryotes. They share little sequence conservation, but all have a common fold, which is electrostatically polarized. 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 1832466018  168 GWLHKQdSSGMRLWKRRWFVL-ADYCLFYYKDSREESVLGSIPLPSYVI--------SPVGPEDRINRKFSFKAEHTGMR 238
Cdd:cd13265      7 GWLLRQ-STILKRWKKNWFVLyGDGNLVYYEDETRREVEGRINMPRECRnirvglecRDVQPPEGRSRDCLLQIVLRDGS 85

                           90       100
                   ....*....|....*....|....*...
gi 1832466018  239 TYYFSADTQEDMNAWiramnQAALMQTR 266
Cdd:cd13265     86 TLFLCAESADDALAW-----KLALQDAR 108