FERM domain C-lobe of Novel band 4.1-like protein 4 and 5 (NBL4 and 5); NBL4 (also called Erythrocyte protein band 4.1-like 4; Epb4 1l4) plays a role the beta-catenin/Tcf signaling pathway and is thought to be involved in establishing the cell polarity or proliferation. NBL4 may be also involved in adhesion, in cell motility and/or in cell-to-cell communication. No role for NBL5 has been proposed to date. Both NBL4 and NBL5 contain a N-terminal FERM domain which has a cloverleaf tripart structure composed of: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe is a member of the PH superfamily. 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 (PTPs) , the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and 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 221379135 246 GVDMHTVLGKDGCEYHLGLTPTGILVFERDQKIGLFFWPKISKLDFKKKKLTLIVIEDDDEgrEQEHTFVFRLYNEKACK 325
Cdd:cd13186    1 GVDLHPVKGEDGNEYFLGLTPTGILVFENKTKIGLFFWPRITKLDFKGKKLKLVVKEKDDQ--EQEHTFVFRLPNKKACK 78

                         90
                 ....*....|....
gi 221379135 326 HLWKCAVEHHTFFR 339
Cdd:cd13186   79 HLWKCAVEHHAFFR 92

FERM adjacent (FA); This region is found adjacent to Band 4.1 / FERM domains (pfam00373) in a subset of FERM containing protein. The region has been hypothesized to play a role in regulatory adaptation, based on similarity to other protein kinase substrates.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....
gi 221379135  352 NFFRMGSRFRYSGRTEFQTTQQSRA--RRTVQFERRPSQRFASR 393
Cdd:pfam08736   1 KFFSLGSKFRYSGRTQKQTVEDSSEilRPQPEFERSPSKRYPSR 44

FERM domain C-lobe of Novel band 4.1-like protein 4 and 5 (NBL4 and 5); NBL4 (also called Erythrocyte protein band 4.1-like 4; Epb4 1l4) plays a role the beta-catenin/Tcf signaling pathway and is thought to be involved in establishing the cell polarity or proliferation. NBL4 may be also involved in adhesion, in cell motility and/or in cell-to-cell communication. No role for NBL5 has been proposed to date. Both NBL4 and NBL5 contain a N-terminal FERM domain which has a cloverleaf tripart structure composed of: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe is a member of the PH superfamily. 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 (PTPs) , the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and 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 221379135 246 GVDMHTVLGKDGCEYHLGLTPTGILVFERDQKIGLFFWPKISKLDFKKKKLTLIVIEDDDEgrEQEHTFVFRLYNEKACK 325
Cdd:cd13186    1 GVDLHPVKGEDGNEYFLGLTPTGILVFENKTKIGLFFWPRITKLDFKGKKLKLVVKEKDDQ--EQEHTFVFRLPNKKACK 78

                         90
                 ....*....|....
gi 221379135 326 HLWKCAVEHHTFFR 339
Cdd:cd13186   79 HLWKCAVEHHAFFR 92

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in erythrocyte membrane protein band 4.1-like 5 (EPB41L5) and similar proteins; This family includes FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in erythrocyte membrane protein band 4.1-like proteins, EPB41L5 and EPB41L4B. EPB41L5 is a mesenchymal-specific protein that is an integral component of the ARF6-based pathway. EPB41L4B is a positive regulator of keratinocyte adhesion and motility, suggesting a role in wound healing. It also promotes cancer metastasis in melanoma, prostate cancer and breast cancer. Both EPB41L5 and EPB41L4B contain a FERM domain that is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-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 221379135  58 IDCRVILLDNTDLSIELSKKALGSFLYEQVFYALDIIEKDYFGLQFMDANHVKHWLDPTKPIKKQVKIGPPYTFRLKVKF 137
Cdd:cd17108    1 IQCKVILLDGTDLSIELPKKAKGQELYEQVFYHLDLIEKDYFGLQFMDAAQVQHWLDPTKKIKKQVKIGPPYTLRFRVKF 80

                 .
gi 221379135 138 Y 138
Cdd:cd17108   81 Y 81

FERM C-terminal PH-like domain;

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 221379135  255 KDGCEYHLGLTPTGILVFERDQKIGLFF-WPKISKLDFKKKKLTLIVIEDddegrEQEHTFVFRLYNEKACKHLWKCAVE 333
Cdd:pfam09380   2 KEGTDLWLGVSAKGILVYEDNNKILNLFpWREIRKISFKRKKFLIKLRDK-----SSEETLGFYTESSRACKYLWKLCVE 76

                  ....*...
gi 221379135  334 HHTFFRLR 341
Cdd:pfam09380  77 QHTFFRLR 84

BDLF3; Provisional

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 221379135 731 SNATFVSGFSAPLTPPSSLPANLNNTGSGCNTTLTSVTTISTPSSPTATVSTTASE-SVAPALSNASAAEILINEIFINN 809
Cdd:PHA03255  32 ASAGNVTGTTAVTTPSPSASGPSTNQSTTLTTTSAPITTTAILSTNTTTVTSTGTTvTPVPTTSNASTINVTTKVTAQNI 111

                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 221379135 810 IINNNASGSITAETA-AKPAGSSTPSAGTLLFSTLSEQERLESQKTNqqmnqslNLNQNHSEVDAPPSEKKTPSNY 884
Cdd:PHA03255 112 TATEAGTGTSTGVTSnVTTRSSSTTSATTRITNATTLAPTLSSKGTS-------NATKTTAELPTVPDERQPSLSY 180

FERM domain C-lobe of Novel band 4.1-like protein 4 and 5 (NBL4 and 5); NBL4 (also called Erythrocyte protein band 4.1-like 4; Epb4 1l4) plays a role the beta-catenin/Tcf signaling pathway and is thought to be involved in establishing the cell polarity or proliferation. NBL4 may be also involved in adhesion, in cell motility and/or in cell-to-cell communication. No role for NBL5 has been proposed to date. Both NBL4 and NBL5 contain a N-terminal FERM domain which has a cloverleaf tripart structure composed of: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe is a member of the PH superfamily. 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 (PTPs) , the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and 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 221379135 246 GVDMHTVLGKDGCEYHLGLTPTGILVFERDQKIGLFFWPKISKLDFKKKKLTLIVIEDDDEgrEQEHTFVFRLYNEKACK 325
Cdd:cd13186    1 GVDLHPVKGEDGNEYFLGLTPTGILVFENKTKIGLFFWPRITKLDFKGKKLKLVVKEKDDQ--EQEHTFVFRLPNKKACK 78

                         90
                 ....*....|....
gi 221379135 326 HLWKCAVEHHTFFR 339
Cdd:cd13186   79 HLWKCAVEHHAFFR 92

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in erythrocyte membrane protein band 4.1-like 5 (EPB41L5) and similar proteins; This family includes FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in erythrocyte membrane protein band 4.1-like proteins, EPB41L5 and EPB41L4B. EPB41L5 is a mesenchymal-specific protein that is an integral component of the ARF6-based pathway. EPB41L4B is a positive regulator of keratinocyte adhesion and motility, suggesting a role in wound healing. It also promotes cancer metastasis in melanoma, prostate cancer and breast cancer. Both EPB41L5 and EPB41L4B contain a FERM domain that is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-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 221379135  58 IDCRVILLDNTDLSIELSKKALGSFLYEQVFYALDIIEKDYFGLQFMDANHVKHWLDPTKPIKKQVKIGPPYTFRLKVKF 137
Cdd:cd17108    1 IQCKVILLDGTDLSIELPKKAKGQELYEQVFYHLDLIEKDYFGLQFMDAAQVQHWLDPTKKIKKQVKIGPPYTLRFRVKF 80

                 .
gi 221379135 138 Y 138
Cdd:cd17108   81 Y 81

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in erythrocyte band 4.1-like protein 4B (EPB41L4B); EPB41L4B, also termed FERM-containing protein CG1, or expressed in high metastatic cells (Ehm2), or Lulu2, is a member of the band 4.1/Nbl4 (novel band 4.1-like protein 4) group of the FERM protein superfamily. It contains a FERM domain that is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N). EPB41L4B is a positive regulator of keratinocyte adhesion and motility, suggesting a role in wound healing. It also promotes cancer metastasis in melanoma, prostate cancer and breast cancer.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 221379135  58 IDCRVILLDNTDLSIELSKKALGSFLYEQVFYALDIIEKDYFGLQFMDANHVKHWLDPTKPIKKQVKIGPPYTFRLKVKF 137
Cdd:cd17204    1 LTCRVLLLDGTDVSVELPKHAKGQDLFDQIVYHLDLVETDYFGLQFMDAAQVAHWLDHTKPIKKQIKIGPPYTLHFRIKY 80

                 ....
gi 221379135 138 YSSE 141
Cdd:cd17204   81 YSSE 84

FERM central domain; This domain is the central structural domain of the FERM domain.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 221379135  142 PNTLREELTRYLFFLQLKQDLLEGRLDCPEDKATELCALALQSELGDYDNQEHSAATVSEFRFVPEQ------TEDLEIA 215
Cdd:pfam00373   3 ELLLQDEVTRHLLYLQAKDDILEGRLPCSEEEALLLAALQLQAEFGDYQPSSHTSEYLSLESFLPKQllrkmkSKELEKR 82

                          90       100       110
                  ....*....|....*....|....*....|....*
gi 221379135  216 ILDEYKTCRGLTPAQAETAFLNKAKWLDMYGVDMH 250
Cdd:pfam00373  83 VLEAHKNLRGLSAEEAKLKYLQIAQSLPTYGVEFF 117

FERM domain C-lobe of FERM domain-containing protein 3 and 5 (FRMD3 and 5); FRMD3 (also called Band 4.1-like protein 4O/4.1O though it is not a true member of that family) is a novel putative tumor suppressor gene that is implicated in the origin and progression of lung cancer. In humans there are 5 isoforms that are produced by alternative splicing. Less is known about FRMD5, though there are 2 isoforms of the human protein are produced by alternative splicing. Both FRMD3 and FRMD5 contain a N-terminal FERM domain, followed by a FERM adjacent (FA) domain, and 4.1 protein C-terminal domain (CTD). The FERM domain has a cloverleaf tripart structure composed of: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe/F3 within the FERM domain is part of the PH domain family. 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 (PTPs), the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and 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 221379135 231 AETAFLNKAKWLDMYGVDMHTVLGKDGCEYHLGLTPTGILVFERDQKIGLFFWPKISKLDFKKKKLTLIVIEDDdegrEQ 310
Cdd:cd13192    1 AEDNFLRKAATLETYGVDPHPVKDHRGNQLYLGFTHTGIVTFQGGKRVHHFRWNDITKFNYEGKMFILHVMQKE----EK 76

                         90       100
                 ....*....|....*....|....*....
gi 221379135 311 EHTFVFRLYNEKACKHLWKCAVEHHTFFR 339
Cdd:cd13192   77 KHTLGFKCPTPAACKHLWKCAVEQQAFYT 105

FERM C-terminal PH-like domain;

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 221379135  255 KDGCEYHLGLTPTGILVFERDQKIGLFF-WPKISKLDFKKKKLTLIVIEDddegrEQEHTFVFRLYNEKACKHLWKCAVE 333
Cdd:pfam09380   2 KEGTDLWLGVSAKGILVYEDNNKILNLFpWREIRKISFKRKKFLIKLRDK-----SSEETLGFYTESSRACKYLWKLCVE 76

                  ....*...
gi 221379135  334 HHTFFRLR 341
Cdd:pfam09380  77 QHTFFRLR 84

FERM domain C-lobe of Protein tyrosine phosphatase non-receptor proteins 3 and 4 (PTPN4 and PTPN3); PTPN4 (also called PTPMEG, protein tyrosine phosphatase, megakaryocyte) is a cytoplasmic protein-tyrosine phosphatase (PTP) thought to play a role in cerebellar function. PTPMEG-knockout mice have impaired memory formation and cerebellar long-term depression. PTPN3/PTPH1 is a membrane-associated PTP that is implicated in regulating tyrosine phosphorylation of growth factor receptors, p97 VCP (valosin-containing protein, or Cdc48 in Saccharomyces cerevisiae), and HBV (Hepatitis B Virus) gene expression; it is mutated in a subset of colon cancers. PTPMEG and PTPN3/PTPH1 contains a N-terminal FERM domain, a middle PDZ domain, and a C-terminal phosphatase domain. PTP1/Tyrosine-protein phosphatase 1 from nematodes and a FERM_C repeat 1 from Tetraodon nigroviridis are also included in this cd. The FERM domain has a cloverleaf tripart structure composed of: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe within the FERM domain is part of the PH domain family. 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 (PTPs) , the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and 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 221379135 244 MYGVDMHTVLGKDGCEYHLGLTPTGILVFERDQKIGLFFWPKISKLDFKKKKLTLIVIEDDDEGREQEHTfvFRLYNEKA 323
Cdd:cd13189    1 LYGVELHSARDSNNLELQIGVSSAGILVFQNGIRINTFPWSKIVKISFKRKQFFIQLRREPNESRDTILG--FNMLSYRA 78

                         90
                 ....*....|....*..
gi 221379135 324 CKHLWKCAVEHHTFFRL 340
Cdd:cd13189   79 CKNLWKSCVEHHTFFRL 95

FERM domain C-lobe of FERM, RhoGEF and pleckstrin domain-containing protein 1 and related proteins; Members here include FARP1 (also called Chondrocyte-derived ezrin-like protein; PH domain-containing family C member 2), FARP2 (also called FIR/FERM domain including RhoGEF; FGD1-related Cdc42-GEF/FRG), and FRMD7(FERM domain containing 7). FARP1 and FARP2 are members of the Dbl family guanine nucleotide exchange factors (GEFs) which are upstream positive regulators of Rho GTPases. FARP1 has increased expression in differentiated chondrocytes. FARP2 is thought to regulate neurite remodeling by mediating the signaling pathways from membrane proteins to Rac. It is found in brain, lung, and testis, as well as embryonic hippocampal and cortical neurons. These members are composed of a N-terminal FERM domain, a proline-rich (PR) domain, Dbl-homology (DH), and two C-terminal PH domains. Other members in this family do not contain the DH domains such as the Human FERM domain containing protein 7 and Caenorhabditis elegans CFRM3, both of which have unknown functions. They contain an N-terminal FERM domain, a PH domain, followed by a FA (FERM adjacent) domain. The FERM domain has a cloverleaf tripart structure composed of: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe/F3 within the FERM domain is part of the PH domain family. 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 (PTPs), the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and 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 221379135 239 AKWLDMYGVDMHTVLGKDGCEYHLGLTPTGILVFERDQKIGLFFWPKISKLDFKKKKLtLIVIEDDDEGREQEhTFVFRL 318
Cdd:cd13193    3 ARRCELYGIRLHPAKDREGVKLNLAVAHMGILVFQGFTKINTFSWAKIRKLSFKRKRF-LIKLHPEAYGSYKD-TVEFSF 80

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|..
gi 221379135 319 YNEKACKHLWKCAVEHHTFFRLRAPVKGPSARQNFFRMGSRF 360
Cdd:cd13193   81 ESRNECKSFWKKCIEHHAFFRCSEVPKPPSPKLRLFSRGSSF 122

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in erythrocyte membrane protein band 4.1-like proteins; The family includes erythrocyte membrane protein band 4.1-like proteins EPB41L1/4.1N, EPB41L2/4.1G, and EPB41L3/4.1B. They belong to the skeletal protein 4.1 family that is involved in cellular processes such as cell adhesion, migration and signaling. EPB41L1 is a cytoskeleton-associated protein that may serve as a tumor suppressor in solid tumors. EPB41L2 is involved in cellular processes such as cell adhesion, migration and signaling. EPB41L3 also acts as a tumor suppressor implicated in a variety of meningiomas and carcinomas. Members in this family contain a FERM domain, a spectrin and actin binding (SAB) domain, and a C-terminal domain. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-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
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 221379135  60 CRVILLDNTDLSIELSKKALGSFLYEQVFYALDIIEKDYFGLQFMDANHVKHWLDPTKPIKKQVKIGpPYTFRLKVKFY 138
Cdd:cd17106    4 CKVLLLDGTEYTCEVEKRAKGQVLFDKVCEHLNLLEKDYFGLTYRDAQDQKNWLDPAKEIKKQIRSG-PWLFSFNVKFY 81

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in erythrocyte band 4.1-like protein 4A (EPB41L4A) and similar proteins; EPB41L4A, also termed protein NBL4, is a member of the band 4.1/Nbl4 (novel band 4.1-like protein 4) group of the FERM protein superfamily. It contains a FERM domain that is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N). EPB41L4A is an important component of the beta-catenin/Tcf pathway. It may be related to determination of cell polarity or proliferation.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 221379135  60 CRVILLDNTDLSIELSKKAL----GSFLYEQVFYALDIIEKDYFGLQFMDANHVKHWLDPTKPIKKQVK-IGPPYTFRLK 134
Cdd:cd17107    5 CEIVLLDESELILTIQQDGIksskGSVVLDVVFQHLNLLETDYFGLRYIDRQHQTHWLDPAKTLSEQLKlIGPPYTLYFG 84

                 ....*..
gi 221379135 135 VKFYSSE 141
Cdd:cd17107   85 VKFYAED 91

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in erythrocyte membrane protein band 4.1 (EPB41) and similar proteins; EPB41, also termed protein 4.1 (P4.1), or 4.1R, or Band 4.1, or EPB4.1, belongs to the skeletal protein 4.1 family that is involved in cellular processes such as cell adhesion, migration and signaling. EPB41 is a widely expressed cytoskeletal phosphoprotein that stabilizes the spectrin-actin cytoskeleton and anchors the cytoskeleton to the cell membrane. EPB41 contains a FERM domain, a spectrin and actin binding (SAB) domain, and a C-terminal domain. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-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
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 221379135  60 CRVILLDNTDLSIELSKKALGSFLYEQVFYALDIIEKDYFGLQFMDANHVKHWLDPTKPIKKQVKiGPPYTFRLKVKFY 138
Cdd:cd17105    3 CKVSLLDDTVYECEVEKHAKGQDLFKKVCEHLNLLEEDYFGLAIWDSPTSKTWLDPAKEIKKQVH-GGPWEFTFNVKFY 80

FERM N-terminal domain; This domain is the N-terminal ubiquitin-like structural domain of the FERM domain.

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 221379135   62 VILLDNTDLSIELSKKALGSFLYEQVFYALDIIEKDYFGLQFMDANHVKHWLDPTKPIKKQVK 124
Cdd:pfam09379   1 VRLLDGTVLEFDVQPKATGQVLLDQVCNHLNLKEKDYFGLQFLDDNGEHRWLDLSKRLSKQAP 63

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in FERM, ARH/RhoGEF and pleckstrin domain-containing protein 2 (FARP2) and similar proteins; FARP2, also termed FERM domain including RhoGEF (FIR), or Pleckstrin homology (PH) domain-containing family C member 3, is a Dbl-family guanine nucleotide exchange factor (GEF) that activates Rac1 or Cdc42 in response to upstream signals, suggesting roles in regulating processes such as neuronal axon guidance and bone homeostasis. It is also a key molecule involved in the response of neuronal growth cones to class-3 semaphorins. FARP2 contains a FERM domain, a Dbl-homology (DH) domain and two pleckstrin homology (PH) domains. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-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 221379135  58 IDCRVILLDNTDLSIELSKKALGSFLYEQVFYALDIIEKDYFGLQFMDANHVKHWLDPTKPIKKQVKIGPPYTFRLKVKF 137
Cdd:cd17190    1 LQLRVKLLDNTTEPLEIEPKADGQALLSQVFKRLNLVESDYFGLEFQNSQSNWIWLEPMKLIVKQVRRPKNTKLRLAVKF 80

                 ....*
gi 221379135 138 YSSEP 142
Cdd:cd17190   81 FPPDP 85

FERM adjacent (FA); This region is found adjacent to Band 4.1 / FERM domains (pfam00373) in a subset of FERM containing protein. The region has been hypothesized to play a role in regulatory adaptation, based on similarity to other protein kinase substrates.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....
gi 221379135  352 NFFRMGSRFRYSGRTEFQTTQQSRA--RRTVQFERRPSQRFASR 393
Cdd:pfam08736   1 KFFSLGSKFRYSGRTQKQTVEDSSEilRPQPEFERSPSKRYPSR 44

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in tyrosine-protein phosphatase non-receptor type 3 (PTPN3); PTPN3, also termed protein-tyrosine phosphatase H1 (PTP-H1), belongs to the non-transmembrane FERM-containing protein-tyrosine phosphatase (PTP) subfamily characterized by a conserved N-terminal FERM domain, a PDZ domain, and a C-terminal PTP catalytic domain. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N). PTPN3 associates with the mitogen-activated protein kinase p38gamma (also known as MAPK12) to form a PTPN3-p38gamma complex that promotes Ras-induced oncogenesis. It may also act as a tumor suppressor in lung cancer through its modulation of epidermal growth factor receptor (EGFR) signaling. Moreover, PTPN3 shows sensitizing effect to anti-estrogens. It dephosphorylates the tyrosine kinase EGFR, disrupts its interaction with the nuclear estrogen receptor, and increases breast cancer sensitivity to small molecule tyrosine kinase inhibitors (TKIs). It also cooperates with vitamin D receptor to stimulate breast cancer growth through their mutual stabilization.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 221379135  60 CRVILLDNTDLSIELSKKALGSFLYEQVFYALDIIEKDYFGLQFMDANHVKH-WLDPTKPIKKQVKIGPPYTFRLKVKFY 138
Cdd:cd17193    4 CNVHFLDGSVQSFKVNKQDTGQVLLDMAYNHLGLTEREYFGLQHNEDSVDSPrWLEPSKPIRKQLKGGFPCSLHFRVRFF 83

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in FERM, ARH/RhoGEF and pleckstrin domain-containing protein 1 (FARP1); FARP1, also termed chondrocyte-derived ezrin-like protein (CDEP), or pleckstrin homology (PH) domain-containing family C member 2 (PLEKHC2), is a neuronal activator of the RhoA GTPase. It promotes outgrowth of developing motor neuron dendrites. It also regulates excitatory synapse formation and morphology, as well as activates the GTPase Rac1 to promote F-actin assembly. As a novel downstream signaling partner of Rif, FARP1 is involved in the regulation of semaphorin signaling in neurons. FARP1 contains a FERM domain, a Dbl-homology (DH) domain and two pleckstrin homology (PH) domains. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-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
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 221379135  61 RVILLDNTDLSIELSKKALGSFLYEQVFYALDIIEKDYFGLQFMDANHVKHWLDPTKPIKKQVKIGPPYTFRLKVKFY 138
Cdd:cd17189    4 KVQMLDDTQEVFEVPQRAPGKVLLDAVCSHLNLVEGDYFGLEFQDHRKVMVWLDLLKPIVKQIRRPKHVVLRFVVKFF 81

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in the ERM family proteins; The ezrin-radixin-moesin (ERM) family includes a group of closely related cytoskeletal proteins that play an essential role in microvilli formation, T-cell activation, and tumor metastasis through providing a regulated linkage between F-actin and membrane-associated proteins. These proteins may also function in signaling cascades that regulate the assembly of actin stress fibers. The ERM proteins consist of an N-terminal FERM domain, a coiled-coil (CC) domain and a C-terminal tail segment (C-tail) containing a well-defined actin-binding motif. They exist in two states, a dormant state in which the FERM domain binds to its own C-terminal tail and thereby precludes binding of some partner proteins, and an activated state, in which the FERM domain binds to one of many membrane binding proteins and the C-terminal tail binds to F-actin. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N). Merlin, which is highly related to the members of the ezrin, radixin, and moesin (ERM) protein family that are directly attached to and functionally linked with NHE1, is included in this family.

                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 221379135  69 DLSIELSKKALGSFLYEQVFYALDIIEKDYFGLQFMDANHVKHWLDPTKPIKKQ-VKIGPPYTFRLKVKFY 138
Cdd:cd17097   11 ELEFSIKPKAKGRELFDLVCRTIGLRETWYFGLQYENKKGRVAWLKPDKKVLTQdVSKNNTLKFFFLVKFY 81

FERM domain C-lobe of FERM domain-containing protein 4A and 4B (FRMD4A and 4B); FRMD4A is part of the Par-3/FRMD4A/cytohesin-1 complex that activates Arf6, a central player in actin cytoskeleton dynamics and membrane trafficking, during junctional remodeling and epithelial polarization. The Par-3/Par-6/aPKC/Cdc42 complex regulates the conversion of primordial adherens junctions (AJs) into belt-like AJs and the formation of linear actin cables. When primordial AJs are formed, Par-3 recruits scaffolding protein FRMD4A which connects Par-3 and the Arf6 guanine-nucleotide exchange factor (GEF), cytohesin-1. FRMD4B (also called GRP1-binding protein, GRSP1) is a novel member of GRP1 signaling complexes that are recruited to plasma membrane ruffles in response to insulin receptor signaling. The GRSP1/FRMD4B protein contains a FERM protein domain as well as two coiled coil domains and may function as a scaffolding protein. GRP1 and GRSP1 interact through the coiled coil domains in the two proteins. The FERM domain has a cloverleaf tripart structure composed of: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe/F3 within the FERM domain is part of the PH domain family. 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 (PTPs) , the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and 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 221379135 246 GVDMHTVLGKDGCEYHLGLTPTGILVFERDQKI---GLFFWPKISKLDFKKKKLTLIV-----IEDDDEGREQEH---TF 314
Cdd:cd13191    1 GVHYYEVKDKNGIPWWLGVSYKGIGQYDLQDKVkprKFFQWKQLENLYFRDRKFSIEVrdprrNSHRSRRTFQSSsvsVH 80

                         90       100       110
                 ....*....|....*....|....*....|...
gi 221379135 315 VFRLYNEKACKHLWKCAVEHHTFFRLRAPVKGP 347
Cdd:cd13191   81 VWYGQTPALCKTIWSMAIAQHQFYLDRKQSKKK 113

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in FERM domain-containing proteins FRMD4A, FRMD4B, and similar proteins; This family includes FERM domain-containing proteins FRMD4A and FRMD4B, both of which contain a FERM domain that is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N). FRMD4A is a cytohesin adaptor involved in cell structure, transport and signaling. It promotes the growth of cancer cells in tongue, head and neck squamous cell carcinomas. FRMD4B, also termed GRP1-binding protein GRSP1, interacts with the coil-coil domain of ARF exchange factor GRP1 to form the Grsp1-Grp1 complex that co-localizes with cortical actin rich regions in response to stimulation of CHO-T cells with insulin or epidermal growth factor (EGF).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 221379135  60 CRVILLDNTDLSIELSKKALGSFLYEQVFYALDIIEKDYFGLQFMDANHVKHWLDPTK-------PIKKQvkiGPPYTFR 132
Cdd:cd17103    5 CQVVLLDDRRLEILVQPKLLAGDLLDLVASHFNLKEKEYFGLAYEDETGHYNWLQLDKrvldhefPKKWS---SGPLVLH 81

                 ....*.
gi 221379135 133 LKVKFY 138
Cdd:cd17103   82 FAVKFY 87

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in tyrosine-protein phosphatase non-receptor type 21 (PTPN21) and similar proteins; PTPN21, also termed protein-tyrosine phosphatase D1 (PTPD1), is a cytosolic non-receptor protein-tyrosine phosphatase (PTP) that belongs to the FERM family of PTPs characterized by a conserved N-terminal FERM domain and a C-terminal PTP catalytic domain with an intervening sequence containing an acidic region and a putative SH3 domain-binding sequence. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N). PTPN21 interacts with a Tec tyrosine kinase family member, the epithelial and endothelial tyrosine kinase (Etk, also known as Bmx), modulates Stat3 activation, and plays a role in the regulation of cell growth and differentiation. It also associates with and activates Src tyrosine kinase, and directs epidermal growth factor (EGF)/Src signaling to the nucleus through activating ERK1/2- and Elk1-dependent gene transcription. PTPD1-Src complex interacts a protein kinase A-anchoring protein AKAP121 to forms a PTPD1-Src-AKAP121 complex, which is required for efficient maintenance of mitochondrial membrane potential and ATP oxidative synthesis. As a novel component of the endocytic pathway, PTPN21 supports EGF receptor stability and mitogenic signaling in bladder cancer cells. Moreover, PTPD1 regulates focal adhesion kinase (FAK) autophosphorylation and cell migration through modulating Src-FAK signaling at adhesion sites.

                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 221379135  61 RVILLDNTDLSIELSKKALGSFLYEQVFYALDIIEKDYFGLQFMDANHVKHWLDPTKPIKKQV-KIGPPYTFRLKVKFY 138
Cdd:cd17192    7 RIQLLNNEFVEFTLSVESTGQECLEAVAQRLELREITYFSLWYYNKQNQQRWVDLEKPLKKQLdKYALEPTVYFGVVFY 85

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in moesin and similar proteins; Moesin, also termed membrane-organizing extension spike protein, is a member of the ezrin/radixin/moesin (ERM) family of cytoskeletal proteins that plays an essential role in microvilli formation, T-cell activation, and tumor metastasis through providing a regulated linkage between F-actin and membrane-associated proteins. These proteins may also function in signaling cascades that regulate the assembly of actin stress fibers. The ERM proteins consist of an N-terminal FERM domain, a coiled-coil (CC) domain and a C-terminal tail segment (C-tail) containing a well-defined actin-binding motif. The C-terminal domain can fold back to bind to the FERM domain forming an autoinhibited conformation. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N). Moesin is involved in mitotic spindle function through stabilizing cell shape and microtubules at the cell cortex. It is required for the formation of F-actin networks that mediate endosome biogenesis or maturation and transport through the degradative pathway.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 221379135  58 IDCRVILLDnTDLSIELSKKALGSFLYEQVFYALDIIEKDYFGLQFMDANHVKHWLDPTKPIKKQ-VKIGPPYTFRLKVK 136
Cdd:cd17237    2 ISVRVTTMD-AELEFAIQPNTTGKQLFDQVVKTIGLREVWFFGLQYQDTKGFSTWLKLNKKVTAQdVRKESPLLFKFRAK 80

                 ..
gi 221379135 137 FY 138
Cdd:cd17237   81 FY 82

FERM domain C-lobe of Protein tyrosine phosphatase non-receptor proteins 14 and 21 (PTPN14 and 21); This CD contains PTP members: pez/PTPN14 and PTPN21. A number of mutations in Pez have been shown to be associated with breast and colorectal cancer. The PTPN protein family belong to larger family of PTPs. PTPs are known to be signaling molecules that regulate a variety of cellular processes including cell growth, differentiation, mitotic cycle, and oncogenic transformation. The members are composed of a N-terminal FERM domain and a C-terminal PTP catalytic domain. The FERM domain has a cloverleaf tripart structure composed of: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe/F3 within the FERM domain is part of the PH domain family. Like most other ERM members they have a phosphoinositide-binding site in their FERM domain. The FERM C domain is the third structural domain within the FERM domain. 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 (PTPs) , the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and 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 221379135 245 YGVDMHTVLGKDGCEYHLGLTPTGILVFERDQKIGLFF-WPKISKLDFKKKKLTLiviedddEGREQEHTFVFRLYNEKA 323
Cdd:cd13188    1 YGEESFPAKDEQGNEVLIGASLEGIFVKHDNGRPPVFFrWEDIKNVINHKRTFSI-------ECQNSEETVQFQFEDAET 73

                         90
                 ....*....|....*..
gi 221379135 324 CKHLWKCAVEHHTFFRL 340
Cdd:cd13188   74 AKYVWKLCVLQHKFYRQ 90

FERM (Four.1 protein, Ezrin, Radixin, Moesin) domain, F1 sub-domain, found in merlin and similar proteins; Merlin, also termed moesin-ezrin-radixin-like protein, or neurofibromin-2 (NF2), or Schwannomerlin, or Schwannomin, is a member of the ezrin/radixin/moesin (ERM) family of cytoskeletal proteins that plays an essential role in microvilli formation, T-cell activation, and tumor metastasis through providing a regulated linkage between F-actin and membrane-associated proteins. These proteins may also function in signaling cascades that regulate the assembly of actin stress fibers. The ERM proteins consist of an N-terminal FERM domain, a coiled-coil (CC) domain and a C-terminal tail segment (C-tail) containing a well-defined actin-binding motif, merlin however lacks the typical actin-binding motif in the C-tail. The FERM domain is made up of three sub-domains, F1, F2, and F3. This family corresponds to the F1 sub-domain, which is also called the N-terminal ubiquitin-like structural domain of the FERM domain (FERM_N). Merlin plays vital roles in controlling proper development of organ sizes by specifically binding to a large number of target proteins localized both in cytoplasm and nuclei. Merlin may function as a tumor suppressor that functions upstream of the core Hippo pathway kinases Lats1/2 (Wts in Drosophila) and Mst1/2 (Hpo in Drosophila), as well as the nuclear E3 ubiquitin ligase DDB1-and-Cullin 4-associated Factor 1 (DCAF1)-associated cullin 4-Roc1 ligase, CRL4(DCAF1). Merlin may also has a tumor suppressor function in melanoma cells, the inhibition of the proto-oncogenic Na(+)/H(+) exchanger isoform 1 (NHE1) activity.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 221379135  59 DCRVILLDnTDLSIELSKKALGSFLYEQVFYALDIIEKDYFGLQFMDANHVKHWLDPTKPIKKQ-VKIGPPYTFRLKVKF 137
Cdd:cd17186    4 TVRIVTMD-AEMEFNCEMKWKGKDLFDLVCRTIGLRETWYFGLQYTDSKGTVAWLKMDKKVLDQdVPKEEPVTFHFLAKF 82

                 .
gi 221379135 138 Y 138
Cdd:cd17186   83 Y 83

FERM domain C-lobe of E3 ubiquitin ligase myosin regulatory light chain-interacting protein (MYLIP; also called inducible degrader of the LDL receptor, IDOL); MYLIP/IDOL is a regulator of the LDL receptor (LDLR) pathway via the nuclear receptor liver X receptor (LXR). In response to cellular cholesterol loading, the activation of LXR leads to the induction of MYLIP expression. MYLIP stimulates ubiquitination of the LDLR on its cytoplasmic tail, directing its degradation. The LXR-MYLIP-LDLR pathway provides a complementary pathway to sterol regulatory element-binding proteins for the feedback inhibition of cholesterol uptake. MYLIP has an N-terminal FERM domain and in some cases a C-terminal RING domain. The FERM domain has a cloverleaf tripart structure composed of: (1) FERM_N (A-lobe or F1); (2) FERM_M (B-lobe, or F2); and (3) FERM_C (C-lobe or F3). The C-lobe/F3 within the FERM domain is part of the PH domain family. 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 (PTPs), the tyrosine kinases FAK and JAK, in addition to other proteins involved in signaling. This domain is structurally similar to the PH and 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 221379135 245 YGVDMHTVLGKDGCEYHLGLTPTGILV----FERDQKIGLffwPKISKLDFKKKKLTLIVIEDDDEGREQEhtfvFRLYN 320
Cdd:cd13195    1 YGVEFFEVRNIEGQKLLIGVGPHGITIcnddFEVIERIPY---TAIQMATSSGRVFTLTYLSDDGSVKVLE----FKLPS 73

                         90       100
                 ....*....|....*....|....*...
gi 221379135 321 EKACKHLWKCAVEHHTFFR---LRAPVK 345
Cdd:cd13195   74 TRAASGLYRAITEKHAFYRcetVRSAVT 101