Band 4.1 homologues; Also known as ezrin/radixin/moesin (ERM) protein domains. Present in myosins, ezrin, radixin, moesin, protein tyrosine phosphatases. Plasma membrane-binding domain. These proteins play structural and regulatory roles in the assembly and stabilization of specialized plasmamembrane domains. Some PDZ domain containing proteins bind one or more of this family. Now includes JAKs.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595    209 VLRVYLENGQTRSFKYDQSTTVKQILESILEKLQISAKSHFSLAVEYSLGARTSRISLLRPDCKIKSIvdlpnSEHLRCV 288
Cdd:smart00295   1 VLKVYLLDGTTLEFEVDSSTTAEELLETVCRKLGIRESEYFGLQFEDPDEDLRHWLDPAKTLLDQDVK-----SEPLTLY 75

                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595    289 FRLSFAPSDAFVLLLsDPKALEYYYQQCVNDVVRGRFamEMRYEACIRLAALHVQQVAYDCNIlkennkvSVHRVEKEYG 368
Cdd:smart00295  76 FRVKFYPPDPNQLKE-DPTRLNLLYLQVRNDILEGRL--PCPEEEALLLAALALQAEFGDYDE-------ELHDLRGELS 145

                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595    369 LGTFLPaivlenvkrRDVRKHirFYLKRDSSRLVDCFGKptigngyppeleacaaqFANEPSMMVRLRYIHIVSHLPSFG 448
Cdd:smart00295 146 LKRFLP---------KQLLDS--RKLKEWRERIVELHKE-----------------LIGLSPEEAKLKYLELARKLPTYG 197

                   ....
gi 71987595    449 GRSF 452
Cdd:smart00295 198 VELF 201

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        30
                ....*....|....*....|....*....|
gi 71987595  56 PYGWEQAKDNDGNTYYIDHLNRTTTYTDPR 85
Cdd:cd00201   1 PPGWEERWDPDGRVYYYNHNTKETQWEDPR 30

Band 4.1 homologues; Also known as ezrin/radixin/moesin (ERM) protein domains. Present in myosins, ezrin, radixin, moesin, protein tyrosine phosphatases. Plasma membrane-binding domain. These proteins play structural and regulatory roles in the assembly and stabilization of specialized plasmamembrane domains. Some PDZ domain containing proteins bind one or more of this family. Now includes JAKs.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595    209 VLRVYLENGQTRSFKYDQSTTVKQILESILEKLQISAKSHFSLAVEYSLGARTSRISLLRPDCKIKSIvdlpnSEHLRCV 288
Cdd:smart00295   1 VLKVYLLDGTTLEFEVDSSTTAEELLETVCRKLGIRESEYFGLQFEDPDEDLRHWLDPAKTLLDQDVK-----SEPLTLY 75

                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595    289 FRLSFAPSDAFVLLLsDPKALEYYYQQCVNDVVRGRFamEMRYEACIRLAALHVQQVAYDCNIlkennkvSVHRVEKEYG 368
Cdd:smart00295  76 FRVKFYPPDPNQLKE-DPTRLNLLYLQVRNDILEGRL--PCPEEEALLLAALALQAEFGDYDE-------ELHDLRGELS 145

                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595    369 LGTFLPaivlenvkrRDVRKHirFYLKRDSSRLVDCFGKptigngyppeleacaaqFANEPSMMVRLRYIHIVSHLPSFG 448
Cdd:smart00295 146 LKRFLP---------KQLLDS--RKLKEWRERIVELHKE-----------------LIGLSPEEAKLKYLELARKLPTYG 197

                   ....
gi 71987595    449 GRSF 452
Cdd:smart00295 198 VELF 201

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        30
                ....*....|....*....|....*....|
gi 71987595  56 PYGWEQAKDNDGNTYYIDHLNRTTTYTDPR 85
Cdd:cd00201   1 PPGWEERWDPDGRVYYYNHNTKETQWEDPR 30

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

                           10        20        30
                   ....*....|....*....|....*....|..
gi 71987595     54 GLPYGWEQAKDNDGNTYYIDHLNRTTTYTDPR 85
Cdd:smart00456   1 PLPPGWEERKDPDGRPYYYNHETKETQWEKPR 32

Domain present in PSD-95, Dlg, and ZO-1/2; Also called DHR (Dlg homologous region) or GLGF (relatively well conserved tetrapeptide in these domains). Some PDZs have been shown to bind C-terminal polypeptides; others appear to bind internal (non-C-terminal) polypeptides. Different PDZs possess different binding specificities.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595     94 RTVSIRRGKDiGFGF-VAAGQLPT---IIQFVSPEGPSD--GLLyANDQILEVNGLDMQNETKDNVVNAVRAAKEELQIT 167
Cdd:smart00228   3 RLVELEKGGG-GLGFsLVGGKDEGggvVVSSVVPGSPAAkaGLR-VGDVILEVNGTSVEGLTHLEAVDLLKKAGGKVTLT 80

                   ..
gi 71987595    168 VQ 169
Cdd:smart00228  81 VL 82

FERM domain B-lobe; The FERM domain has a cloverleaf tripart structure (FERM_N, FERM_M, FERM_C/N, alpha-, and C-lobe/A-lobe, B-lobe, C-lobe/F1, F2, F3). The FERM domain is found in the cytoskeletal-associated proteins such as ezrin, moesin, radixin, 4.1R, and merlin. These proteins provide a link between the membrane and cytoskeleton and are involved in signal transduction pathways. The FERM domain is also found in protein tyrosine phosphatases, the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the pleckstrin homology (PH) and phosphotyrosine binding (PTB) domains and consequently is capable of binding to both peptides and phospholipids at different sites.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595 308 ALEYYYQQCVNDVVRGRFamEMRYEACIRLAALHVQQVAYDCNilkennkvSVHRVEKEYGLGTFLPAIVLENVKRRDVR 387
Cdd:cd14473   1 TRYLLYLQVKRDILEGRL--PCSEETAALLAALALQAEYGDYD--------PSEHKPKYLSLKRFLPKQLLKQRKPEEWE 70

                ....*....
gi 71987595 388 KHIRFYLKR 396
Cdd:cd14473  71 KRIVELHKK 79

Band 4.1 homologues; Also known as ezrin/radixin/moesin (ERM) protein domains. Present in myosins, ezrin, radixin, moesin, protein tyrosine phosphatases. Plasma membrane-binding domain. These proteins play structural and regulatory roles in the assembly and stabilization of specialized plasmamembrane domains. Some PDZ domain containing proteins bind one or more of this family. Now includes JAKs.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595    209 VLRVYLENGQTRSFKYDQSTTVKQILESILEKLQISAKSHFSLAVEYSLGARTSRISLLRPDCKIKSIvdlpnSEHLRCV 288
Cdd:smart00295   1 VLKVYLLDGTTLEFEVDSSTTAEELLETVCRKLGIRESEYFGLQFEDPDEDLRHWLDPAKTLLDQDVK-----SEPLTLY 75

                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595    289 FRLSFAPSDAFVLLLsDPKALEYYYQQCVNDVVRGRFamEMRYEACIRLAALHVQQVAYDCNIlkennkvSVHRVEKEYG 368
Cdd:smart00295  76 FRVKFYPPDPNQLKE-DPTRLNLLYLQVRNDILEGRL--PCPEEEALLLAALALQAEFGDYDE-------ELHDLRGELS 145

                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595    369 LGTFLPaivlenvkrRDVRKHirFYLKRDSSRLVDCFGKptigngyppeleacaaqFANEPSMMVRLRYIHIVSHLPSFG 448
Cdd:smart00295 146 LKRFLP---------KQLLDS--RKLKEWRERIVELHKE-----------------LIGLSPEEAKLKYLELARKLPTYG 197

                   ....
gi 71987595    449 GRSF 452
Cdd:smart00295 198 VELF 201

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in FERM and PDZ domain-containing protein 1 (FRMPD1); FRMPD1, also termed FERM domain-containing protein 2, is an activator of G-protein signaling 3 (AGS3)-binding protein that regulates the subcellular location of AGS3 and its interaction with G-proteins. It also binds to the tetratricopeptide repeat (TPR) motif-containing adaptor protein LGN. FRMPD1 contains a PDZ domain and a FERM domain. The FERM domain is made up of three sub-domains, F1, F2, and F3. The family corresponds to the F1 sub-domain of the FERM domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N).

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595 206 LPNVLRVYLENGQTRSFKYDQSTTVKQILESILEKLQISAKSHFSLAVE--YSlgarTSRISLLRPDCKIKSIVDLPNSE 283
Cdd:cd17168   1 MPNVLKVYLENGQTKAFKFESNTTVKDIILTLKEKLSIRSIEHFALVLEeqYS----ISKLYLLHEEELIEQVVEKRESH 76

                        90
                ....*....|....
gi 71987595 284 HLRCVFRLSFAPSD 297
Cdd:cd17168  77 DYRCLFRVCFVPKD 90

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in FERM and PDZ domain-containing protein 3 (FRMPD3); FRMPD3 is an uncharacterized FERM and PDZ domain-containing protein. The FERM domain is made up of three sub-domains, F1, F2, and F3. The family corresponds to the F1 sub-domain of the FERM domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N).

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595 206 LPNVLRVYLENGQTRSFKYDQSTTVKQILESILEKLQISAKSHFSLAVEYSLGARTSRISLLRPDCKIKSIVDLPNSEHL 285
Cdd:cd17169   1 IPNVLKVFLENGQIKSFTFDGRTTVKDVMLTLQDRLSLRHIEHFALVLEYGGPEQNHKFLLLQDKQPLAHVVQRTHYQGM 80

                        90
                ....*....|..
gi 71987595 286 RCVFRLSFAPSD 297
Cdd:cd17169  81 KCLFRICFFPKD 92

PDZ domain of syntrophins, and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of syntrophins (including alpha-1-syntrophin, beta-1-syntrophin, beta-2-syntrophin, gamma-1-syntrophin, and gamma-2-syntrophin), and related domains. Syntrophins play a role in recruiting various signaling molecules into signaling complexes and help provide appropriate spatiotemporal regulation of signaling pathways. They function in cytoskeletal organization and maintenance; as components of the dystrophin-glycoprotein complex (DGC), they help maintain structural integrity of skeletal muscle fibers. They link voltage-gated sodium channels to the actin cytoskeleton and the extracellular matrix, and control the localization and activity of the actin reorganizing proteins such as PI3K, PI(3,4)P2 and TAPP1. Through association with various cytoskeletal proteins within the cells, they are involved in processes such as regulation of focal adhesions, myogenesis, calcium homeostasis, and cell migration. They also have roles in synapse formation and in the organization of utrophin, acetylcholine receptor, and acetylcholinesterase at the neuromuscular synapse. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This syntrophin-like family domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595  94 RTVSIRRGKDIGFGFVAAG----QLPTIIQFVSPEGPSD--GLLYANDQILEVNGLDMQNETKDNVVNAVRAAKEELQIT 167
Cdd:cd06801   1 RTVRVVKQDVGGLGISIKGgaehKMPILISKIFKGQAADqtGQLFVGDAILSVNGENLEDATHDEAVQALKNAGDEVTLT 80

                ..
gi 71987595 168 VQ 169
Cdd:cd06801  81 VK 82

PDZ domain; PDZ domains are found in diverse signaling proteins.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595    95 TVSIRRGKDIGFGF-----VAAGQLPTIIQFVSPEGPSD-GLLYANDQILEVNGLDMQNETKDNVVNAVRAAKEELQITV 168
Cdd:pfam00595   1 QVTLEKDGRGGLGFslkggSDQGDPGIFVSEVLPGGAAEaGGLKVGDRILSINGQDVENMTHEEAVLALKGSGGKVTLTI 80

                  .
gi 71987595   169 Q 169
Cdd:pfam00595  81 L 81

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

                           10        20        30
                   ....*....|....*....|....*....|..
gi 71987595     54 GLPYGWEQAKDNDGNTYYIDHLNRTTTYTDPR 85
Cdd:smart00456   1 PLPPGWEERKDPDGRPYYYNHETKETQWEKPR 32

PDZ domain 3 of human discs large homolog 1 (Dlg1), Dlg2, and Dlg4, Drosophila disc large (Dlg), and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain 3 of Drosophila Dlg1, human Dlg1, 2, and 4 and related domains. Dlg1 (also known as synapse-associated protein Dlg197; SAP-97), Dlg2 (also known as channel-associated protein of synapse-110; postsynaptic density protein 93, PSD-93), Dlg4 (also known as postsynaptic density protein 95, PSD-95; synapse-associated protein 90, SAP-90) each have 3 PDZ domains and belong to the membrane-associated guanylate kinase family. Dlg1 regulates antigen receptor signaling and cell polarity in lymphocytes, B-cell proliferation and antibody production, and TGFalpha bioavailability; its PDZ3 domain binds pro-TGFalpha, and its PDZ2 domain binds the TACE metalloprotease responsible for cleaving pro-TGFalpha to a soluble form. Dlg2 is involved in N-methyl-D-aspartate (NMDA) receptor signaling, regulating surface expression of NMDA receptors in dorsal horn neurons of the spinal cord; it interacts with NMDA receptor subunits and with Shaker-type K+ channel subunits to cluster into a channel complex. The Dlg4 PDZ1 domain binds NMDA receptors, and its PDZ2 domain binds neuronal nitric oxide synthase (nNOS), forming a complex in neurons. The Drosophila Scribble complex (Scribble, Dlg, and lethal giant larvae) plays a role in apico-basal cell polarity, and in other forms of polarity, including regulation of the actin cytoskeleton, cell signaling and vesicular trafficking, and in tumor development; postsynaptic targeting of Drosophila DLG requires interactions mediated by the first two PDZ domains. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This Dlg-like family PDZ3 domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595  94 RTVSIRRGKdIGFGFVAAG---QLPTIIQFVSPEGPSD--GLLYANDQILEVNGLDMQNETKDNVVNAVRAAKEELQITV 168
Cdd:cd06795   3 RKIVLHKGS-TGLGFNIVGgedGEGIFISFILAGGPADlsGELRRGDQILSVNGVDLRNATHEQAAAALKNAGQTVTIIA 81

                ....*
gi 71987595 169 QQLPQ 173
Cdd:cd06795  82 QYKPE 86

PDZ domain 10 of multi-PDZ-domain protein 1 (MUPP1), domain 8 of PATJ (protein-associated tight junction) and similar domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain 10 of MUPP1, PDZ domain 8 of PATJ, and related domains. MUPP1 and PATJ serve as scaffolding proteins linking different proteins and protein complexes involved in the organization of tight junctions and epithelial polarity. MUPP1 contains an L27 (Lin-2 and Lin-7 binding) domain and 13 PDZ domains. PATJ (also known as INAD-like) contains an L27 domain and ten PDZ domains. MUPP1 and PATJ share several binding partners, including junctional adhesion molecules (JAM), zonula occludens (ZO)-3, Pals1 (protein associated with Lin-7), Par (partitioning defective)-6 proteins, and nectins (adherence junction adhesion molecules). PATJ lacks 3 PDZ domains seen in MUPP1: PDZ6, 9, and 13; consequently, MUPP1 PDZ7 and 8 align with PATJ PDZ6 and 7; and MUPP1 PDZ domains 10-12 align with PATJ PDZ domains 8-10. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This MUPP1-like family PDZ10 domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 71987595  96 VSIRRGKDIGFGFVaagqlptIIQFVSPEGPS--DGLLYANDQILEVNGLDMQNETKDNVVNAVRAAKEELQITV 168
Cdd:cd06673  17 LSIVGGSDTLLGAI-------IIHEVYEDGAAakDGRLWAGDQILEVNGEDLRKATHDEAINVLRQTPQKVRLLV 84

PDZ domain 1 of Zonula Occludens-1 (ZO-1), homologs ZO-2 and ZO-3, and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain 1 of ZO-1, -2, -3 and related domains. Zonula occludens proteins (ZO-1, ZO-2, ZO-3) are multi-PDZ domain proteins involved in the maintenance and biogenesis of multi-protein networks at the cytoplasmic surface of intercellular contacts in epithelial and endothelial cells. They have three N-terminal PDZ domains, PDZ1-3, followed by a Src homology-3 (SH3) domain and a guanylate kinase (GuK)-like domain. Among protein-protein interactions for all ZO proteins is the binding of the first PDZ domain (PDZ1) to the C-termini of claudins, and the homo- and hetero-dimerization of ZO-proteins via their second PDZ domain (PDZ2), which takes place by symmetrical domain swapping of the first two beta-strands of PDZ2. At the cell level, ZO-1 and ZO-2 are involved in polarity maintenance, gene transcription, cell proliferation, and tumor cell metastasis. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This ZO family PDZ1 domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595  95 TVSIRRGKDIGFGF----------VAAGQLPTIIQFVSPEGPSDGLLYANDQILEVNGLDMQNETKDNVVNAVRAAKEEL 164
Cdd:cd06727   2 TVTLHRAPGFGFGIavsggrdnphFQSGDTSIVISDVLKGGPAEGKLQENDRVVSVNGVSMENVEHSFAVQILRKCGKTA 81

                ....
gi 71987595 165 QITV 168
Cdd:cd06727  82 NITV 85

FERM domain B-lobe; The FERM domain has a cloverleaf tripart structure (FERM_N, FERM_M, FERM_C/N, alpha-, and C-lobe/A-lobe, B-lobe, C-lobe/F1, F2, F3). The FERM domain is found in the cytoskeletal-associated proteins such as ezrin, moesin, radixin, 4.1R, and merlin. These proteins provide a link between the membrane and cytoskeleton and are involved in signal transduction pathways. The FERM domain is also found in protein tyrosine phosphatases, the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the pleckstrin homology (PH) and phosphotyrosine binding (PTB) domains and consequently is capable of binding to both peptides and phospholipids at different sites.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595 308 ALEYYYQQCVNDVVRGRFamEMRYEACIRLAALHVQQVAYDCNilkennkvSVHRVEKEYGLGTFLPAIVLENVKRRDVR 387
Cdd:cd14473   1 TRYLLYLQVKRDILEGRL--PCSEETAALLAALALQAEYGDYD--------PSEHKPKYLSLKRFLPKQLLKQRKPEEWE 70

                ....*....
gi 71987595 388 KHIRFYLKR 396
Cdd:cd14473  71 KRIVELHKK 79

PDZ domain 7 of multi-PDZ-domain protein 1 (MUPP1), PDZ domain 6 of PATJ (protein-associated tight junction) and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain 7 of MUPP1 and PDZ domain 6 of PATJ, and related domains. MUPP1 and PATJ serve as scaffolding proteins linking different proteins and protein complexes involved in the organization of tight junctions and epithelial polarity. MUPP1 contains an L27 (Lin-2 and Lin-7 binding) domain and 13 PDZ domains. PATJ (also known as INAD-like) contains an L27 domain and ten PDZ domains. MUPP1 and PATJ share several binding partners, including junctional adhesion molecules (JAM), zonula occludens (ZO)-3, Pals1 (protein associated with Lin-7), Par (partitioning defective)-6 proteins, and nectins (adherence junction adhesion molecules). PATJ lacks 3 PDZ domains seen in MUPP1: PDZ6, 9, and 13; consequently, MUPP1 PDZ7 and 8 align with PATJ PDZ6 and 7; and MUPP1 PDZ domains 10-12 align with PATJ PDZ domains 8-10. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This MUPP1-like family PDZ7 domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595  93 KRTVSIRR--GKDIGFGFVAA---GQLPTI--------IQFVSPEGPSD--GLLYANDQILEVNGLDMQNETKDNVVNAV 157
Cdd:cd06671   2 PRRVELWRepGKSLGISIVGGrvmGSRLSNgeeirgifIKHVLEDSPAGrnGTLKTGDRILEVNGVDLRNATHEEAVEAI 81

                        90
                ....*....|....
gi 71987595 158 RAAKEELQITVQQL 171
Cdd:cd06671  82 RNAGNPVVFLVQSL 95

PDZ domains of the Na+/H+ exchange regulatory cofactor (NHERF) family (NHERF1-4), and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of the Na+/H+ exchange regulatory cofactor (NHERF) family of multi-PDZ-domain-containing scaffolding proteins (NHERF1-4), and related domains. The NHERF family includes NHERF1 (also known as EBP50), NHERF2 (also known as E3KARP; TKA-1; SIP-1), NHERF3 (also known as CAP70; CLAMP; Napi-Cap-1; PDZD1) and NHERF4 (also known as IKEPP; PDZK2; Napi-Cap-2). NHERF1 and NHERF2 have tandem PDZ domains (PDZ1-2); NHERF3 and NHERF4 have four PDZ domains (PDZ1-4). NHERFs are involved in the regulation of multiple receptors or transporters, such as type II sodium-phosphate cotransporter (Npt2a), purinergic P2Y1 receptor P2Y1R, the beta2-adrenergic receptor (beta2-AR), parathyroid hormone receptor type 1 (PTHR), the lysophosphatidic acid receptors (LPARs), sodium-hydrogen exchanger 3 (NHE3), and cystic fibrosis transmembrane conductance regulator (CFTR). NHERF-PDZ1 domain interaction partners include Npt2a, purinergic P2Y1 receptor, beta2-AR, CFTR, PTHR, NH3, G-protein-coupled receptor kinase 6 (GRK6A), platelet-derived growth factor receptor (PDGFR), B1 subunit of the H+ATPase, cholesterol, receptor for activated C-kinase RACK1, aquaporin 9, among others. The NHERF PDZ2 domain interacts with fewer proteins: NHERF1 PDZ2 binds Npt2a, PTHR, beta-catenin, aquaporin 9, and RACK1; NHERF2 PDZ2 binds LPA2, P2Y1R, and NHE3, cGMP-dependent protein kinase type II (cGKII). NHERF4 PDZ1 and PDZ4 bind the epithelial Ca(2+) channels TRPV5 and TRPV6. NHERF2/NHERF3 heterodimerization is mediated by PDZ domains of NHERF2 and the C-terminal PDZ domain recognition motif of NHERF3. NHERF4 regulates several transporters mediating influx of xenobiotics and nutrients in the small intestine. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This NHERF-like family domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595  94 RTVSIRRGKDiGFGF---VAAGQLPTIIQFVSPEGPSD--GLLyANDQILEVNGLDMQNETKDNVVNAVRAAKEELQITV 168
Cdd:cd06768   1 RLCHLVKGPE-GYGFnlhAEKGRPGHFIREVDPGSPAEraGLK-DGDRLVEVNGENVEGESHEQVVEKIKASGNQVTLLV 78

PDZ domain of tyrosine-protein phosphatase non-receptor type 3 (PTPN3), tyrosine-protein phosphatase non-receptor type 4 (PTNP4), and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of PTPN3, PTPN4 and related domains. PTPN3 (also known as protein-tyrosine phosphatase H1, PTP-H1) has a tumor-suppressive or a tumor-promoting role in many cancers. It serves as a specific phosphatase for the MAP kinase p38gamma; the two interact via their PDZ domains and cooperate to promote Ras-induced oncogenesis. Interaction partners of the PTPN3 PDZ domain include p38gamma and human papillomavirus E6 oncoprotein. PTPN4 (also known as protein-tyrosine phosphatase MEG1) plays a role in immunity, learning, synaptic plasticity or cell homeostasis. p38gamma is also an interaction partner of the PTPN4 PDZ domain: PTPN4 regulates neuronal cell homeostasis by protecting neurons against apoptosis; binding of the C terminus of p38gamma to the PDZ domain of PTPN4, antagonizes the catalytic autoinhibition of PTPN4, leading to cell apoptosis. Other interaction partners of the PTPN4 PDZ domain include glutamate receptor subunit GluN2A, and RABV strain G protein, among others. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This PTPN3-like family domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595  91 DGKRTVSIRRGKDIGFGFVAAG----QLPTIIQFVSPEGPSDGL---LYANDQILEVNGLDMQNETKDNVVNAVRAAKE- 162
Cdd:cd06706   1 DGLVLIRMKPDENGRFGFNVKGgvdqKMPVIVSRVAPGTPADLCiprLNEGDQVLLINGRDISEHTHDQVVMFIKASREr 80

                ....*....
gi 71987595 163 ---ELQITV 168
Cdd:cd06706  81 hsgELVLLV 89

PDZ domain of regulator of G-protein signaling 3 (RGS3), and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of RGS3, and related domains. RGS3 down-regulates GPCR signal transduction by increasing the GTPase activity of G-protein alpha subunits, thereby driving G-proteins into their inactive GDP-bound form. It downregulates G-protein-mediated release of inositol phosphates and activation of MAP kinases. In Eph/ephrin signaling, RGS3 binds via its PDZ domain to the cytoplasmic C terminus of Eph receptor tyrosine kinase EphB. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This RGS3-like family domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 71987595  96 VSIRRGKDiGFGFVAAGQLPTIIQFVSPEGPSDGL-LYANDQILEVNGLDMQNETKDNVVNAVRAAKEELQITVQQ 170
Cdd:cd06711   3 ITIQRGKD-GFGFTICDDSPVRVQAVDPGGPAEQAgLQQGDTVLQINGQPVERSKCVELAHAIRNCPSEIILLVWR 77

PDZ domain of SH3 and multiple ankyrin repeat domains protein 1 (SHANK1), SHANK2, SHANK3, and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of SHANK1, SHANK2, SHANK3, and related domains. SHANK family proteins, SHANK1 (also known as somatostatin receptor-interacting protein, SSTR-interacting protein, SSTRIP), SHANK2 (also known as cortactin-binding protein 1, proline-rich synapse-associated protein 1), and SHANK3 (proline-rich synapse-associated protein 2) are synaptic scaffolding proteins which are highly enriched in the post-synaptic densities of excitatory synapses. They have been implicated in synaptic transmission, synapse formation, synaptic plasticity, and cytoskeletal remodeling, and are regulators of Cav1 calcium current and CREB target expression. Many protein ligands have been identified for the Shank PDZ domain, such as GKAP (also known as SAPAP), betaPIX (a guanine nucleotide exchange factor used by Rho GTPase family members Rac1 and Cdc42), alpha-latrotoxin, neuroligin, group I metabotropic glutamate receptors (mGluRs), and L-type calcium channels. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This SHANK-like family domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged as beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta- strand F.

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                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595  94 RTVSIRRGKDiGFGFVAAGQLPT--IIQF--------------VSPEGPSD--GLlYANDQILEVNGLDMQNETKDNVVN 155
Cdd:cd06746   7 RTVVLQKGDK-GFGFVLRGAKAVgpILEFtptpafpalqylesVDPGGVADkaGL-KKGDFLLEINGEDVVKASHEQVVN 84

                        90
                ....*....|...
gi 71987595 156 AVRAAKEELQITV 168
Cdd:cd06746  85 LIRQSGNTLVLKV 97

PDZ domain of densin, erbin, and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of densin, erbin, and related domains. Densin (also known as leucine-rich repeat-containing protein 7, LRRC7, densin-180, protein LAP1) and erbin (also known as densin-180-like protein, Erbb2-interacting protein, protein LAP2) belong to the LAP (leucine-rich repeat and PDZ domain) family of scaffolding proteins that play roles in the maintenance of cell shape and apical-basal polarity. Densin and erbin are components of the excitatory postsynaptic compartment and are regulators of dendritic morphology and postsynaptic structure. The densin PDZ domain binds CaV1.3 alpha1 subunit, delta-catenin, and MAGUIN-1. Binding partners of the erbin PDZ domain include ErbB receptor tyrosine kinase ErbB2, HTLV-1 Tax1, Cav1.3 Ca2+channels, and constituents of the cadherin:catenin cell adhesion complex, in particular delta-catenin, p0071 and ARVCF. The erbin PDZ domain binds Smad3, a transductor of the TGFbeta pathway, possibly by a novel interface of binding. Erbin and two other LAP proteins (scribble and lano) redundantly regulate epithelial polarity and apical adhesion complex. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This densin and erbin-like family domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged as beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595  95 TVSIRrgKDIGFGFVAAGQLPT------------IIQFVSPEGPSDGLLYANDQILEVNGLDMQNETKDNVVNAVRAAke 162
Cdd:cd06749   2 RVRIE--KNPGLGFSISGGIGSqgnpfrpdddgiFVTKVQPDGPASKLLQPGDKILEVNGYDFVNIEHGQAVSLLKSF-- 77

                        90
                ....*....|..
gi 71987595 163 elQITVQQLPQR 174
Cdd:cd06749  78 --QNTVDLVVER 87

PDZ domain 1 of protein tyrosine phosphatase non-receptor type 13 (PTPN13), and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain 1 of PTPN13 [also known as Fas-associated protein-tyrosine phosphatase 1 (FAP-1), protein-tyrosine phosphatase 1E (PTP-E1), and protein-tyrosine phosphatase (PTPL1)], and related domains. PTPN13 regulates negative apoptotic signaling and mediates phosphoinositide 3-kinase (PI3K) signaling. PTPN13 has five PDZ domains. Proteins known to interact with PTPN13 PDZ domains include: PLEKHA1 and PLEKHA2 via PTPN13-PDZ domain 1, Fas receptor and thyroid receptor-interacting protein 6 via PTPN13-PDZ domain 2, nerve growth factor receptor and protein kinase N2 via PTPN13-PDZ domain 3, PDZ and LIM domain 4 (PDLIM4) via PTPN13-PDZ domains 2 and 4, and brain calpain-2 via PTPN13-PDZ domains 3, 4 and 5. Calpain-2-mediated PTPN13 fragments may be involved in abnormal tau aggregation and increased risk for Alzheimer's disease. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This PTPN13 family PDZ1 domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595  94 RTVSIRRGKDIGFGFVAAG-------QLPTIIQFVSPEGPSD--GLLYANDQILEVNGLDMQNETKDNVVNAVRAAKEEL 164
Cdd:cd23072   3 TLVNLKKDAKYGLGFQIVGgeksgrlDLGIFISSITPGGPADldGRLKPGDRLISVNDVSLEGLSHDAAVEILQNAPEDV 82

                        90
                ....*....|
gi 71987595 165 QITVQQLPQR 174
Cdd:cd23072  83 TLVVSQPKER 92

PDZ domain 4 of protein tyrosine phosphatase non-receptor type 13 (PTPN13), and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain 4 of PTPN13 [also known as Fas-associated protein-tyrosine phosphatase 1 (FAP-1), protein-tyrosine phosphatase 1E (PTP-E1), and protein-tyrosine phosphatase (PTPL1)] and related domains. PTPN13 regulates negative apoptotic signaling and mediates phosphoinositide 3-kinase (PI3K) signaling. PTPN13 has five PDZ domains. Proteins known to interact with PTPN13 PDZ domains include: PLEKHA1 and PLEKHA2 via PTPN13-PDZ domain 1, Fas receptor and thyroid receptor-interacting protein 6 via PTPN13-PDZ domain 2, nerve growth factor receptor and protein kinase N2 via PTPN13-PDZ domain 3, PDZ and LIM domain 4 (PDLIM4) via PTPN13-PDZ domains 2 and 4, and brain calpain-2 via PTPN13-PDZ domains 3, 4 and 5. Calpain-2-mediated PTPN13 fragments may be involved in abnormal tau aggregation and increased risk for Alzheimer's disease. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This PTPN13 family PDZ4 domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 71987595  95 TVSIRRGKDIGFGFVAAGQLPT----IIQFVSPEGPSDGLLYANDQILEVNGLDMQNETKDNVVNAVRAAKEELQITV 168
Cdd:cd06696   5 EVTLTKSEKGSLGFTVTKGKDDngcyIHDIVQDPAKSDGRLRPGDRLIMVNGVDVTNMSHTEAVSLLRAAPKEVTLVL 82

PDZ domain 5 of Danio rerio tyrosine-protein phosphatase non-receptor type 13 (Ptpn13) and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain 5 of Danio rerio Ptpn13, and related domains. Protein-tyrosine phosphatases (PTPs) dephosphorylate phosphotyrosyl residues in proteins that are phosphorylated by protein tyrosine kinases (PTKs). Danio rerio Ptpn13 is a classical non-receptor-like PTP. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This PTPN13-like family domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 71987595 104 IGFGFVAAGQLPTI-IQFVSPEGPS--DGLLYANDQILEVNGLDMQNETKDNVVNAVRAAKEELQITV 168
Cdd:cd23060  12 LGFSLVGGEGGSGIfVKSISPGGVAdrDGRLQVGDRLLQVNGESVIGLSHSKAVNILRKAKGTVQLTV 79

PDZ domain 1 of Drosophila Scribble, human Scribble homolog, and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain 1 of Drosophila Scribble (also known as LAP4), human Scribble homolog (also known as hScrib, LAP4, CriB1, ScrB1 and Vartul), and related domains. They belong to the LAP family, which describes proteins that contain either one or four PDZ domains and 16 LRRs (leucine-rich repeats) and function in controlling cell shape, size and subcellular protein localization. In Drosophila, the Scribble complex, comprising Scribble, discs large, and lethal giant larvae, plays a role in apico-basal cell polarity, in other forms of polarity, including regulation of the actin cytoskeleton, cell signaling and vesicular trafficking, and in tumor development. Mammalian Scribble is important in many aspects of cancer development. Scribble and its homologs can be downregulated or overexpressed in cancer; they have a role in cancer beyond their function in loss of cell polarity. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This Scribble-like family PDZ1 domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|....
gi 71987595 118 IQFVSPEGPSD--GLLyANDQILEVNGLDMQNETKDNVVNAVRAAKEELQITVQ 169
Cdd:cd06704  34 ISRVTEGGPAAkaGVR-VGDKLLEVNGVDLVDADHHEAVEALKNSGNTVTMVVL 86

PDZ domain 3 of Drosophila Scribble, human Scribble homolog, and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain 2 of Drosophila Scribble (also known as LAP4), human Scribble homolog (also known as hScrib, LAP4, CriB1, ScrB1 and Vartul), and related domains. They belong to the LAP family, which describes proteins that contain either one or four PDZ domains and 16 LRRs (leucine-rich repeats) and function in controlling cell shape, size and subcellular protein localization. In Drosophila, the Scribble complex, comprising Scribble, discs large, and lethal giant larvae, plays a role in apico-basal cell polarity, in other forms of polarity, including regulation of the actin cytoskeleton, cell signaling and vesicular trafficking, and in tumor development. Mammalian Scribble is important in many aspects of cancer development. Scribble and its homologs can be downregulated or overexpressed in cancer; they have a role in cancer beyond their function in loss of cell polarity. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This Scribble-like family PDZ3 domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                        10        20        30        40        50
                ....*....|....*....|....*....|....*....|....*....|...
gi 71987595 118 IQFVSPEGP-SDGLLYANDQILEVNGLDMQNETKDNVVNAVRAAKEELQITVQ 169
Cdd:cd06702  36 ISKVIPDGAaAKSGLRIGDRILSVNGKDLRHATHQEAVSALLSPGQEIKLLVR 88

PDZ domain of Golgi-associated PDZ and coiled-coil motif-containing protein (GOPC), and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of GOPC and related domains. GOPC, also known as PIST (PDZ domain protein interacting specifically with TC10), FIG (fused in glioblastoma), and CAL (CFTR-associated ligand), regulates the trafficking of a wide array of proteins, including small GTPases, receptors, and cell surface molecules such as cadherin 23 and CFTR. It may regulate CFTR chloride currents and acid-sensing ASIC3 currents by modulating cell surface expression of both channels, and may play a role in autophagy. Interaction partners of the GOPC PDZ domains include: FZD5, FZD8, ASIC3, CFTR, MUC3, ARFRP1, Ggamma13, neuroligin, and Stargazin. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This GOPC-like family domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595  94 RTVSIRRGKDIGFGFVAAG----QLPTIIQFVSPEGPSD--GLLYANDQILEVNGLDMQNETKDNVVNAVRAAKEELQIT 167
Cdd:cd06800   1 RKVLLSKEPHEGLGISITGgkehGVPILISEIHEGQPADrcGGLYVGDAILSVNGIDLRDAKHKEAVTILSQQRGEITLE 80

                ..
gi 71987595 168 VQ 169
Cdd:cd06800  81 VV 82

PDZ domain of MYO18A protein, and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of MYO18 protein and related domains. MYO18 (also known as myosin XVIIIA, KIAA0216, MysPDZ), a member of the myosin superfamily, is involved in regulating cell protrusion and migration, and Golgi trafficking and morphology, and is required for myoblast adhesion and muscle integrity. The MYO18A/MRCK/LRAP35a complex regulates actomyosin retrograde flow in cell protrusion and migration; the PtdIns(4)P/GOLPH3/MYO18A/F-actin complex is a hub for signals that regulate Golgi trafficking function. The MYO18A PDZ domain binds p190Rho-guanine nucleotide exchange factor (p190RhoGEF), Golgin45, and leucine repeat adaptor protein 1 (Lurap1, also known as Lrap35a). PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This MYO18-like family domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged as beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta- strand F.

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                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 71987595  93 KRTVSIRRGKDIGFGfvaagqLPTIIQFVSP-EGPSD---GLLyANDQILEVNGLDMQNETKDNVVNAVRAAKEELQITV 168
Cdd:cd06747  17 RRGTIVERGPDDGQE------LKRTVHFAEPgAGTKNlatGLL-PGDRLIEVNGVNVENASRDEIIEMIRKSGDTVTLKV 89

                .
gi 71987595 169 Q 169
Cdd:cd06747  90 Q 90

PDZ domain of ARHGEF11, ARHGEF12, and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of ARHGEF11, ARHGEF12, and related domains. This subfamily includes the GEFs (guanine exchange factors) ARHGEF11 (Rho guanine nucleotide exchange factor 11, known as PDZ-RhoGEF) and ARHGEF12 (Rho guanine nucleotide exchange factor 12, also known as leukemia-associated RhoGEF). GEFs activate Rho GTPases by promoting GTP binding. ARHGEF11/12 are regulators of G protein signaling (RGS) domain-containing GEFs; the RGS domain mediates their binding to and activation of Galpha (and Gq also in the case of ARHGEF12), in response to G-protein coupled receptor activation. ARHGEF11 and 12 are involved in serum-signaling, and regulate Yes-Associated Protein (YAP1)-dependent transcription. The ARHGEF12 PDZ domain binds plexin-B1 and the receptor tyrosine kinase insulin-like growth factor receptor (IGF-R1) beta-subunit. ARHGEF12 also interacts with glutamate receptor delta-1(GluD1), a postsynaptic organizer of inhibitory synapses in cortical pyramidal neurons. The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This ARHGEF11-12-like family domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                        10        20        30        40        50        60
                ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 71987595  94 RTVSIRRGKDiGFGFVAAGQLPTIIQFVSPEGPS-DGLLYANDQILEVNGLDMQNETKDNVVNAVRA 159
Cdd:cd23069   2 RCVVIQRDEN-GYGLTVSGDNPVFVQSVKEGGAAyRAGVQEGDRIIKVNGTLVTHSNHLEVVKLIKS 67

PDZ domain 3 of Discs Large 5 (Dlg5) and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain 3 of Drosophila and mammalian Dlg5, and related domains. Dlg5 is a scaffold protein with multiple conserved functions that are independent of each other in regulating growth, cell polarity, and cell adhesion. It has a coiled-coil domain, 4 PDZ domains and a MAGUK domain (an SH3 domain next to a non-catalytically active guanylate kinase domain). Deregulation of Dlg5 has been implicated in the malignancy of several cancer types. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This Dlg5-like family PDZ3 domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                        10        20        30
                ....*....|....*....|....*....|....*....
gi 71987595 131 LYANDQILEVNGLDMQNETKDNVVNAVRAAKEELQITVQ 169
Cdd:cd06767  43 LEYGDQLLEVNGINLRNATEQQAALILRQCGDTITMLVQ 81

PDZ domain 5 of membrane-associated guanylate kinase inverted 1 (MAGI-1), MAGI-2, and MAGI-3, and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain 5 of MAGI1, 2, 3 (MAGI is also known as Membrane-associated guanylate kinase, WW and PDZ domain-containing protein) and related domains. MAGI proteins have been implicated in the control of cell migration and invasion through altering the activity of phosphatase and tensin homolog (PTEN) and modulating Akt signaling. Four MAGI proteins have been identified (MAGI1-3 and MAGIX). MAGI1-3 have 6 PDZ domains and bind to the C-terminus of PTEN via their PDZ2 domain. MAGIX has a single PDZ domain that is related to MAGI1-3 PDZ domain 5, and belongs to this MAGI1,2,3-like family. Other binding partners for MAGI1 include JAM4, C-terminal tail of high risk HPV-18 E6, megalin, TRAF6, Kir4.1 (basolateral K+ channel subunit), and cadherin 23; for MAGI2, include DASM1, dendrin, axin, beta- and delta-catenin, neuroligin, hyperpolarization-activated cation channels, beta1-adrenergic receptors, NMDA receptor, and TARPs; and for MAGI3 includes LPA2. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This MAGI family PDZ5 domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged as beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

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gi 71987595  95 TVSIRRGKDiGFGF-VAAGQ----LPTIIQFVSPEGPS--DGLLYANDQILEVNGLDMQNETKDNVVNAVRAAKEELQIT 167
Cdd:cd06735   3 SVELERGPK-GFGFsIRGGReynnMPLYVLRLAEDGPAqrDGRLRVGDQILEINGESTQGMTHAQAIELIRSGGSVVRLL 81

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gi 71987595 168 VQ 169
Cdd:cd06735  82 LR 83

PDZ domain 4 of glutamate receptor-interacting protein 1 (GRIP1) and GRIP2, and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) binding proteins GRIP1 (ABP/GRIP2) and GRIP2, and related domains. GRIP1 and GRIP2 each have 7 PDZ domains. The interaction of GRIP1 and GRIP2 with GluA2/3 (AMPAR subunit) regulates AMPAR trafficking and synaptic targeting. GRIP1 has an essential role in regulating AMPAR trafficking during synaptic plasticity and learning and memory. GRIP1 and GRIP2 interact with a variety of other proteins associated with protein trafficking and internalization, for example GRIP1 also interacts with KIF5 (also known as kinesin 1), EphB receptors, scaffold protein liprin-alpha, and the rasGEF GRASP-1. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This GRIP family PDZ4 domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

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gi 71987595  96 VSIRRGKDIGFGFVAAGQL--------PTIIQFVSPEGPSD--GLLYANDQILEVNGLDMQNETKDNVVNAVRAAKEELQ 165
Cdd:cd06686  10 VILRGDPLKGFGIQLQGGVfatetlssPPLISFIEPDSPAErcGVLQVGDRVLSINGIPTEDRTLEEANQLLRDSASKVT 89

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gi 71987595 166 ITVQ 169
Cdd:cd06686  90 LEIE 93

PDZ domain of PICK1 (protein interacting with C-kinase 1) and similar domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of PICK1, and related domains. PICK1 (also known as PRKCA-binding protein and protein kinase C-alpha-binding protein) plays a key role in regulating trafficking of binding partners by altering either their subcellular targeting and/or surface expression. PICK1 plays a role in synaptic plasticity by regulating the trafficking and internalization of amino-3-hydroxy-5-methylisoxazole-4-propionic acid (AMPA) receptors; the PICK1-PDZ domain binds the AMPA receptor subunits. The PICK1 PDZ domain also binds glutamate transporters, Eph receptors, metabotropic glutamate receptors, and ASICs (acid-sensing ion channels), among others. Clustering and synaptic targeting of PICK1 requires direct interaction between the PDZ domain and lipid membranes. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This PICK-like family domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged as beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta- strand F.

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gi 71987595 128 DGLLYANDQILEVNGLDMQNETKDNVVNAVRAAKEELQITVQQL 171
Cdd:cd06722  41 DGTLAAGDEIVGVNGKSVKGKTKVEVAKMIQAVKGEVTIHYNKL 84