Plays a role in vesicular protein sorting (By similarity). Acts at the crossroads between the secretory and endocytic pathways. Is involved in the endosome to vacuole protein transport and, as component of the membrane-associated retromer complex, is also involved in endosome-to-Golgi retrograde transport (By similarity). Also involved in the efficient sorting of seed storage protein globulin 12S. Arabidopsis thaliana (taxid: 3702)
Plays a role in vesicular protein sorting. Acts at the crossroads between the secretory and endocytic pathways. Is involved in the endosome to vacuole protein transport and, as component of the membrane-associated retromer complex, is also involved in endosome-to-Golgi retrograde transport.
Arabidopsis thaliana (taxid: 3702)
Close Homologs in the Non-Redundant Database Detected by BLAST
Score = 96.3 bits (240), Expect = 7e-26
Identities = 48/124 (38%), Positives = 65/124 (52%), Gaps = 7/124 (5%)
Query: 1 MLAVRSAFTDRSSALLTVQTLLSELSSLQMRAEKLEAASSKIFGGDKSRIRKIEELKETI 60
AV+ DR+ ALLT+Q+L +L+S + + EKL+AA + K+EEL+E +
Sbjct: 102 CQAVKETLDDRADALLTLQSLKKDLASKKAQLEKLKAAPG-------IKPAKVEELEEEL 154
Query: 61 RVTEDAKSVAINEYERIKENNRTELERLDKERRADFLNMLKGFVVNQVGYAEKIANVWAK 120
E A A YE I E + EL+R +ER D LK F QV YAEKIA W
Sbjct: 155 EEAESALEEARKRYEEISERLKEELKRFHEERARDLKAALKEFARLQVQYAEKIAEAWES 214
Query: 121 VAEE 124
+ E
Sbjct: 215 LLPE 218
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions. Length = 218
>gnl|CDD|220180 pfam09325, Vps5, Vps5 C terminal like
Score = 35.3 bits (82), Expect = 0.004
Identities = 24/123 (19%), Positives = 51/123 (41%), Gaps = 9/123 (7%)
Query: 3 AVRSAFTDRSSALLTVQTLLSELSSLQMRAEKLEAASSKIFGGDKSRIRKIEELKETIRV 62
A++ F +R Q L+ + KLE + R K+++ ++ I+
Sbjct: 110 AIKDVFHERVKVWQNWQNAQQTLTKKREAKAKLELSG---------RTDKLDQAQQEIKE 160
Query: 63 TEDAKSVAINEYERIKENNRTELERLDKERRADFLNMLKGFVVNQVGYAEKIANVWAKVA 122
E E+E I + + E+ER +K R DF +++ ++ + + +++ W
Sbjct: 161 WEAKVDRGQKEFEEISKTIKKEIERFEKNRVKDFKDIIIKYLESLLNTQQQLIKYWEAFL 220
Query: 123 EET 125
E
Sbjct: 221 PEA 223
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. This subfamily consists of SNX1, SNX2, and similar proteins. SNX1 and SNX2 are components of the retromer complex, a membrane coat multimeric complex required for endosomal retrieval of lysosomal hydrolase receptors to the Golgi. The retromer consists of a cargo-recognition subcomplex and a subcomplex formed by a dimer of sorting nexins (SNX1 and/or SNX2), which ensures efficient cargo sorting by facilitating proper membrane localization of the cargo-recognition subcomplex. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions. Length = 224
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. SNX1 is a component of the retromer complex, a membrane coat multimeric complex required for endosomal retrieval of lysosomal hydrolase receptors to the Golgi. The retromer consists of a cargo-recognition subcomplex and a subcomplex formed by a dimer of sorting nexins (SNX1 and/or SNX2), which ensures effcient cargo sorting by facilitating proper membrane localization
>cd07664 BAR_SNX2 The Bin/Amphiphysin/Rvs (BAR) domain of Sorting Nexin 2
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. SNX2 is a component of the retromer complex, a membrane coat multimeric complex required for endosomal retrieval of lysosomal hydrolase receptors to the Golgi. The retromer consists of a cargo-recognition subcomplex and a subcomplex formed by a dimer of sorting nexins (SNX1 and/or SNX2), which ensures effcient cargo sorting by facilitating proper membrane localization
>cd07623 BAR_SNX1_2 The Bin/Amphiphysin/Rvs (BAR) domain of Sorting Nexins 1 and 2
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. This subfamily consists of SNX1, SNX2, and similar proteins. SNX1 and SNX2 are components of the retromer complex, a membrane coat multimeric complex required for endosomal retrieval of lysosomal hydrolase receptors to the Golgi. The retromer consists of a cargo-recognition subcomplex and a subcomplex formed by a dimer of sorting nexins (SNX1 and/or SNX2), wh
>cd07627 BAR_Vps5p The Bin/Amphiphysin/Rvs (BAR) domain of yeast Sorting Nexin Vps5p
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. Vsp5p is the yeast counterpart of human SNX1 and is part of the retromer complex, which functions in the endosome-to-Golgi retrieval of vacuolar protein sorting receptor Vps10p, the Golgi-resident membrane protein A-ALP, and endopeptidase Kex2. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in
>PF09325 Vps5: Vps5 C terminal like; InterPro: IPR015404 Vps5 is a sorting nexin that functions in membrane trafficking
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>cd07625 BAR_Vps17p The Bin/Amphiphysin/Rvs (BAR) domain of yeast Sorting Nexin Vps17p
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. Vsp17p forms a dimer with Vps5p, the yeast counterpart of human SNX1, and is part of the retromer complex that mediates the transport of the carboxypeptidase Y receptor Vps10p from endosomes to Golgi. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>cd07624 BAR_SNX7_30 The Bin/Amphiphysin/Rvs (BAR) domain of Sorting Nexins 7 and 30
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. This subfamily consists of SNX7, SNX30, and similar proteins. The specific functions of SNX7 and SNX30 have not been elucidated. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>cd07621 BAR_SNX5_6 The Bin/Amphiphysin/Rvs (BAR) domain of Sorting Nexins 5 and 6
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. Members of this subfamily include SNX5, SNX6, the mammalian SNX32, and similar proteins. SNX5 and SNX6 may be components of the retromer complex, a membrane coat multimeric complex required for endosomal retrieval of lysosomal hydrolase receptors to the Golgi, acting as a mammalian equivalent of yeast Vsp17p. The function of SNX32 is still unknown. BAR domain
>cd07662 BAR_SNX6 The Bin/Amphiphysin/Rvs (BAR) domain of Sorting Nexin 6
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. SNX6 forms a stable complex with SNX1 and may be a component of the retromer complex, a membrane coat multimeric complex required for endosomal retrieval of lysosomal hydrolase receptors to the Golgi, acting as a mammalian equivalent of yeast Vsp17p. It interacts with the receptor serine/threonine kinases from the transforming growth factor-beta family. It also plays
>cd07663 BAR_SNX5 The Bin/Amphiphysin/Rvs (BAR) domain of Sorting Nexin 5
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. SNX5, abundantly expressed in macrophages, regulates macropinocytosis, a process that enables cells to internalize large amounts of external solutes. It may also be a component of the retromer complex, a membrane coat multimeric complex required for endosomal retrieval of lysosomal hydrolase receptors to the Golgi, acting as a mammalian equivalent of yeast Vsp17p. It
>cd07666 BAR_SNX7 The Bin/Amphiphysin/Rvs (BAR) domain of Sorting Nexin 7
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. The specific function of SNX7 is still unknown. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>cd07630 BAR_SNX_like The Bin/Amphiphysin/Rvs (BAR) domain of uncharacterized Sorting Nexins
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. This subfamily is composed of uncharacterized proteins with similarity to sorting nexins (SNXs), which are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>cd07622 BAR_SNX4 The Bin/Amphiphysin/Rvs (BAR) domain of Sorting Nexin 4
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. SNX4 is involved in recycling traffic from the sorting endosome (post-Golgi endosome) back to the late Golgi. It is also implicated in the regulation of plasma membrane receptor trafficking and interacts with receptors for EGF, insulin, platelet-derived growth factor and leptin. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and
>cd07628 BAR_Atg24p The Bin/Amphiphysin/Rvs (BAR) domain of yeast Sorting Nexin Atg24p
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. Atg24p is involved in membrane fusion events at the vacuolar surface during pexophagy. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>cd07598 BAR_FAM92 The Bin/Amphiphysin/Rvs (BAR) domain of Family with sequence similarity 92 (FAM92)
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions including organelle biogenesis, membrane trafficking or remodeling, and cell division and migration. This group is composed of proteins from the family with sequence similarity 92 (FAM92), which were originally identified by the presence of the unknown domain DUF1208. This domain shows similarity to the BAR domains of sorting nexins. Mammals contain at least two member types, FAM92A and FAM92B, which may exist in many variants. The Xenopus homolog of FAM92A1, xVAP019, is essential for embryo survival and cell differentiation. FAM92A1 may be involved in regulating cell proliferation and apoptosis. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>cd07667 BAR_SNX30 The Bin/Amphiphysin/Rvs (BAR) domain of Sorting Nexin 30
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. The specific function of SNX30 is still unknown. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>KOG2273 consensus Membrane coat complex Retromer, subunit VPS5/SNX1, Sorting nexins, and related PX domain-containing proteins [Intracellular trafficking, secretion, and vesicular transport]
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. The function of Atg20p is unknown but it has been shown to interact with Atg11p, which plays a role in linking cargo molecules with vesicle-forming components. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>cd07626 BAR_SNX9_like The Bin/Amphiphysin/Rvs (BAR) domain of Sorting Nexin 9 and Similar Proteins
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. This subfamily consists of SNX9, SNX18, SNX33, and similar proteins. SNX9 is localized to plasma membrane endocytic sites and acts primarily in clathrin-mediated endocytosis, while SNX18 is localized to peripheral endosomal structures, and acts in a trafficking pathway that is clathrin-independent but relies on AP-1 and PACS1. BAR domains for
>cd07597 BAR_SNX8 The Bin/Amphiphysin/Rvs (BAR) domain of Sorting Nexin 8
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. SNX8 and the yeast counterpart Mvp1p are involved in sorting and delivery of late-Golgi proteins, such as carboxypeptidase Y, to vacuoles. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>cd07307 BAR The Bin/Amphiphysin/Rvs (BAR) domain, a dimerization module that binds membranes and detects membrane curvature
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions including organelle biogenesis, membrane trafficking or remodeling, and cell division and migration. Mutations in BAR containing proteins have been linked to diseases and their inactivation in cells leads to altered membrane dynamics. A BAR domain with an additional N-terminal amphipathic helix (an N-BAR) can drive membrane curvature. These N-BAR domains are found in amphiphysins and endophilins, among others. BAR domains are also frequently found alongside domains that determine lipid specificity, such as the Pleckstrin Homology (PH) and Phox Homology (PX) domains which are present in beta centaurins (ACAPs and ASAPs) and sorting nexins, respectively. A FES-CIP4 Homology (FCH) domain together with a coiled coil region is called the F-
>PF03114 BAR: BAR domain; InterPro: IPR004148 Endocytosis and intracellular transport involve several mechanistic steps: (1) for the internalisation of cargo molecules, the membrane needs to bend to form a vesicular structure, which requires membrane curvature and a rearrangement of the cytoskeleton; (2) following its formation, the vesicle has to be pinched off the membrane; (3) the cargo has to be subsequently transported through the cell and the vesicle must fuse with the correct cellular compartment
Members of the Amphiphysin protein family are key regulators in the early steps of endocytosis, involved in the formation of clathrin-coated vesicles by promoting the assembly of a protein complex at the plasma membrane and directly assist in the induction of the high curvature of the membrane at the neck of the vesicle. Amphiphysins contain a characteristic domain, known as the BAR (Bin-Amphiphysin-Rvs)-domain, which is required for their in vivo function and their ability to tubulate membranes []. The crystal structure of these proteins suggest the domain forms a crescent-shaped dimer of a three-helix coiled coil with a characteristic set of conserved hydrophobic, aromatic and hydrophilic amino acids. Proteins containing this domain have been shown to homodimerise, heterodimerise or, in a few cases, interact with small GTPases. ; GO: 0005515 protein binding, 0005737 cytoplasm; PDB: 4AVM_A 2D4C_C 1X03_A 1X04_A 2RND_A 2RMY_A 2FIC_A 2C08_A 2Z0V_A 3SOG_A ....
>COG5391 Phox homology (PX) domain protein [Intracellular trafficking and secretion / General function prediction only]
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Amphiphysins function primarily in endocytosis and other membrane remodeling events. They contain an N-terminal BAR domain with an additional N-terminal amphipathic helix (an N-BAR), a variable central domain, and a C-terminal SH3 domain. This subfamily is composed of different isoforms of amphiphysin and Bridging integrator 2 (Bin2). Amphiphysin I proteins, enriched in the brain and nervous system, contain domains that bind clathrin, Adaptor Protein complex 2 (AP2), dynamin and synaptojanin. They function in synaptic vesicle endocytosis. Some amphiphysin II isoforms, also called Bridging integrator 1 (Bin1), are localized in many different tissues and may function in intracellular vesicle trafficking. In skeletal muscle, Bin1 plays a role in the organization and maintenance of th
>cd07611 BAR_Amphiphysin_I_II The Bin/Amphiphysin/Rvs (BAR) domain of Amphiphysin I and II
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Amphiphysins function primarily in endocytosis and other membrane remodeling events. They contain an N-terminal BAR domain with an additional N-terminal amphipathic helix (an N-BAR), a variable central domain, and a C-terminal SH3 domain. Amphiphysin I proteins, enriched in the brain and nervous system, contain domains that bind clathrin, Adaptor Protein complex 2 (AP2), dynamin and synaptojanin. They function in synaptic vesicle endocytosis. Some amphiphysin II isoforms, also called Bridging integrator 1 (Bin1), are localized in many different tissues and may function in intracellular vesicle trafficking. In skeletal muscle, Bin1 plays a role in the organization and maintenance of the T-tubule network. The N-BAR domain of amphiphysin forms a curved dimer with a posit
>cd07612 BAR_Bin2 The Bin/Amphiphysin/Rvs (BAR) domain of Bridging integrator 2
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Bridging integrator 2 (Bin2) is a BAR domain containing protein that is mainly expressed in hematopoietic cells. It is upregulated during granulocyte differentiation and is thought to function primarily in this lineage. The BAR domain of Bin2 is closely related to the BAR domains of amphiphysins, which function primarily in endocytosis and other membrane remodeling events. Amphiphysins contain an N-terminal BAR domain with an additional N-terminal amphipathic helix (an N-BAR), a variable central domain, and a C-terminal SH3 domain. Unlike amphiphysins, Bin2 does not appear to contain a C-terminal SH3 domain. Amphiphysin I proteins, enriched in the brain and nervous system, function in synaptic vesicle endocytosis. Some amphiphysin II isoforms, also called Bridging integrator 1 (
>PF10456 BAR_3_WASP_bdg: WASP-binding domain of Sorting nexin protein; InterPro: IPR019497 The C-terminal region of the Sorting nexin group of proteins appears to carry a BAR-like (Bin/amphiphysin/Rvs) domain
This domain is very diverse and the similarities with other BAR domains are few. In the Sorting nexins it is associated with IPR001683 from INTERPRO, and in combination with PX appears to be necessary to bind WASP along with p85 to form a multimeric signalling complex []. ; PDB: 2RAK_A 2RAI_A 3DYU_C 2RAJ_A 3DYT_A.
>cd07590 BAR_Bin3 The Bin/Amphiphysin/Rvs (BAR) domain of Bridging integrator 3
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Bridging integrator 3 (Bin3) is widely expressed in many tissues except in the brain. It plays roles in regulating filamentous actin localization and in cell division. In humans, the Bin3 gene is located in chromosome 8p21.3, a region that is implicated in cancer suppression. Homozygous inactivation of the Bin3 gene in mice led to the development of cataracts and an increased likelihood of lymphomas during aging, suggesting a role for Bin3 in lens development and cancer suppression. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
Members of this family are found in mouse, human and Drosophila melanogaster. The function of this family is unknown.
>cd07591 BAR_Rvs161p The Bin/Amphiphysin/Rvs (BAR) domain of Saccharomyces cerevisiae Reduced viability upon starvation protein 161 and similar proteins
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. This subfamily is composed of fungal proteins with similarity to Saccharomyces cerevisiae Reduced viability upon starvation protein 161 (Rvs161p) and Schizosaccharomyces pombe Hob3 (homolog of Bin3). S. cerevisiae Rvs161p plays a role in regulating cell polarity, actin cytoskeleton polarization, vesicle trafficking, endocytosis, bud formation, and the mating response. It forms a heterodimer with another BAR domain protein Rvs167p. Rvs161p and Rvs167p share common functions but are not interchangeable. Their BAR domains cannot be replaced with each other and the overexpression of one cannot suppress the mutant phenotypes of the other. S. pombe Hob3 is important in regulating filamentous actin localization an
>cd07669 BAR_SNX33 The Bin/Amphiphysin/Rvs (BAR) domain of Sorting Nexin 33
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. SNX33 interacts with Wiskott-Aldrich syndrome protein (WASP) and plays a role in the maintenance of cell shape and cell cycle progression. It modulates the shedding and endocytosis of cellular prion protein (PrP(c)) and amyloid precursor protein (APP). BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in
>KOG3771 consensus Amphiphysin [Intracellular trafficking, secretion, and vesicular transport]
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. SNX9, also known as SH3PX1, is a cytosolic protein that interacts with proteins associated with clathrin-coated pits such as Cdc-42-associated tyrosine kinase 2 (ACK2). It binds class I polyproline sequences found in dynamin 1/2 and the WASP/N-WASP actin regulators. SNX9 is localized to plasma membrane endocytic sites and acts primarily in clathrin-mediated endocytosi
>cd07670 BAR_SNX18 The Bin/Amphiphysin/Rvs (BAR) domain of Sorting Nexin 18
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Sorting nexins (SNXs) are Phox homology (PX) domain containing proteins that are involved in regulating membrane traffic and protein sorting in the endosomal system. SNXs differ from each other in their lipid-binding specificity, subcellular localization and specific function in the endocytic pathway. A subset of SNXs also contain BAR domains. The PX-BAR structural unit determines the specific membrane targeting of SNXs. SNX18 is localized to peripheral endosomal structures, and acts in a trafficking pathway that is clathrin-independent but relies on AP-1 and PACS1. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>cd07618 BAR_Rich1 The Bin/Amphiphysin/Rvs (BAR) domain of RhoGAP interacting with CIP4 homologs protein 1
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. RhoGAP interacting with CIP4 homologs protein 1 (Rich1) is also called Neuron-associated developmentally-regulated protein (Nadrin) or Rho GTPase activating protein 17 (ARHGAP17). It is a Cdc42- and Rac-specific GAP that binds to polarity proteins through the scaffold protein angiomotin and plays a role in maintaining the integrity of tight junctions. It may be a component of a sorting mechanism in the recycling of tight junction transmembrane proteins. Rich1 contains an N-terminal BAR domain followed by a Rho GAP domain and a C-terminal proline-rich domain. It interacts with the BAR domain proteins endophilin and amphiphysin through its proline-rich region. The BAR domain of Rich1 forms oligomers and can bind membranes and induce membrane tubulation.
>cd07595 BAR_RhoGAP_Rich-like The Bin/Amphiphysin/Rvs (BAR) domain of Rich-like Rho GTPase Activating Proteins
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. This subfamily is composed of Rho and Rac GTPase activating proteins (GAPs) with similarity to GAP interacting with CIP4 homologs proteins (Rich). Members contain an N-terminal BAR domain, followed by a Rho GAP domain, and a C-terminal prolin-rich region. Vertebrates harbor at least three Rho GAPs in this subfamily including Rich1, Rich2, and SH3-domain binding protein 1 (SH3BP1). Rich1 and Rich2 play complementary roles in the establishment and maintenance of cell polarity. Rich1 is a Cdc42- and Rac-specific GAP that binds to polarity proteins through the scaffold protein angiomotin and plays a role in maintaining the integrity of tight junctions. Rich2 is a Rac GAP that interacts with CD317 and plays a role in actin cytoskeleton organization and
>cd07599 BAR_Rvs167p The Bin/Amphiphysin/Rvs (BAR) domain of Saccharomyces cerevisiae Reduced viability upon starvation protein 167 and similar proteins
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. This subfamily is composed of fungal proteins with similarity to Saccharomyces cerevisiae Reduced viability upon starvation protein 167 (Rvs167p) and Schizosaccharomyces pombe Hob1 (homolog of Bin1). S. cerevisiae Rvs167p plays a role in regulation of the actin cytoskeleton, endocytosis, and sporulation. It forms a heterodimer with another BAR domain protein Rvs161p. Rvs161p and Rvs167p share common functions but are not interchangeable. Their BAR domains cannot be replaced with each other and the overexpression of one cannot suppress the mutant phenotypes of the other. Rvs167p also interacts with the GTPase activating protein (GAP) Gyp5p, which is involved in ER to Golgi vesicle trafficking. BAR domains fo
>cd07589 BAR_DNMBP The Bin/Amphiphysin/Rvs (BAR) domain of Dynamin Binding Protein
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. DyNamin Binding Protein (DNMBP), also called Tuba, is a Cdc42-specific Guanine nucleotide Exchange Factor (GEF) that binds dynamin and various actin regulatory proteins. It serves as a link between dynamin function, Rho GTPase signaling, and actin dynamics. It plays an important role in regulating cell junction configuration. DNMBP contains BAR and SH3 domains as well as a Dbl Homology domain (DH domain), which harbors GEF activity. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions. The BAR domain of DNMBP may be involved in binding to membranes. The gene encoding DNMBP is a candidate gene for late onset Alzheimer's disease.
>cd07620 BAR_SH3BP1 The Bin/Amphiphysin/Rvs (BAR) domain of SH3-domain Binding Protein 1
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. SH3-domain binding protein 1 (SH3BP1 or 3BP-1) is a Rac GTPase activating protein that inhibits Rac-mediated platelet-derived growth factor (PDGF)-induced membrane ruffling. SH3BP1 contains an N-terminal BAR domain followed by a GAP domain for Rho and Rac GTPases and a C-terminal proline-rich domain. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>cd07619 BAR_Rich2 The Bin/Amphiphysin/Rvs (BAR) domain of RhoGAP interacting with CIP4 homologs protein 2
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. RhoGAP interacting with CIP4 homologs protein 2 (Rich2) is a Rho GTPase activating protein that interacts with CD317, a lipid raft-associated integral membrane protein. It plays a role in actin cytoskeleton organization and the maintenance of microvilli in polarized epithelial cells. Rich2 contains an N-terminal BAR domain followed by a GAP domain for Rho and Rac GTPases and a C-terminal proline-rich domain. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>cd07593 BAR_MUG137_fungi The Bin/Amphiphysin/Rvs (BAR) domain of Schizosaccharomyces pombe Meiotically Up-regulated Gene 137 protein and similar proteins
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions including organelle biogenesis, membrane trafficking or remodeling, and cell division and migration. This subfamily is composed predominantly of uncharacterized fungal proteins with similarity to Schizosaccharomyces pombe Meiotically Up-regulated Gene 137 protein (MUG137), which may play a role in meiosis and sporulation in fission yeast. MUG137 contains an N-terminal BAR domain and a C-terminal SH3 domain, similar to endophilins. Endophilins play roles in synaptic vesicle formation, virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be invol
>cd07592 BAR_Endophilin_A The Bin/Amphiphysin/Rvs (BAR) domain of Endophilin-A
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Endophilins are accessory proteins, localized at synapses, which interact with the endocytic proteins, dynamin and synaptojanin. They are essential for synaptic vesicle formation from the plasma membrane. They interact with voltage-gated calcium channels, thus linking vesicle endocytosis to calcium regulation. They also play roles in virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. Endophilins contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. They are classified into two types, A and B. Vertebrates contain three endophilin-A isoforms. Endophilin-A proteins are enriched in the bra
>cd07613 BAR_Endophilin_A1 The Bin/Amphiphysin/Rvs (BAR) domain of Endophilin-A1
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Endophilins play roles in synaptic vesicle formation, virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. Endophilins contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. They are classified into two types, A and B. Vertebrates contain three endophilin-A isoforms. Endophilin-A proteins are enriched in the brain and play multiple roles in receptor-mediated endocytosis. Endophilin-A1 (or endophilin-1) is also referred to as SH3P4 (SH3 domain containing protein 4) or SH3GL2 (SH3 domain containing Grb2-like protein 2). It is localized in presynaptic nerve terminals. It plays many roles i
>cd07615 BAR_Endophilin_A3 The Bin/Amphiphysin/Rvs (BAR) domain of Endophilin-A3
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Endophilins are accessory proteins localized at synapses that interacts with the endocytic proteins, dynamin and synaptojanin. They are essential for synaptic vesicle formation from the plasma membrane. They interact with voltage-gated calcium channels, thus linking vesicle endocytosis to calcium regulation. They also play roles in virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. Endophilins contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. They are classified into two types, A and B. Endophilin-A proteins are enriched in the brain and play multiple roles in receptor-mediated e
>cd07600 BAR_Gvp36 The Bin/Amphiphysin/Rvs (BAR) domain of Saccharomyces cerevisiae Golgi vesicle protein of 36 kDa and similar proteins
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions including organelle biogenesis, membrane trafficking or remodeling, and cell division and migration. Proteomic analysis shows that Golgi vesicle protein of 36 kDa (Gvp36) may be involved in vesicular trafficking and nutritional adaptation. A Saccharomyces cerevisiae strain deficient in Gvp36 shows defects in growth, in actin cytoskeleton polarization, in endocytosis, in vacuolar biogenesis, and in the cell cycle. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>cd07603 BAR_ACAPs The Bin/Amphiphysin/Rvs (BAR) domain of ArfGAP with Coiled-coil, ANK repeat and PH domain containing proteins
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. This subfamily is composed of ACAPs (ArfGAP with Coiled-coil, ANK repeat and PH domain containing proteins), which are Arf GTPase activating proteins (GAPs) containing an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, and C-terminal ankyrin (ANK) repeats. Vertebrates contain at least three members, ACAP1, ACAP2, and ACAP3. ACAP1 and ACAP2 are Arf6-specific GAPs, involved in the regulation of endocytosis, phagocytosis, cell adhesion and migration, by mediating Arf6 signaling. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>cd07594 BAR_Endophilin_B The Bin/Amphiphysin/Rvs (BAR) domain of Endophilin-B
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Endophilins play roles in synaptic vesicle formation, virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. Endophilins contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. They are classified into two types, A and B. Vertebrates contain two endophilin-B isoforms. Endophilin-B proteins are cytoplasmic proteins expressed mainly in the heart, placenta, and skeletal muscle.
>cd07614 BAR_Endophilin_A2 The Bin/Amphiphysin/Rvs (BAR) domain of Endophilin-A2
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Endophilins are accessory proteins, localized at synapses, which interact with the endocytic proteins, dynamin and synaptojanin. They are essential for synaptic vesicle formation from the plasma membrane. They interact with voltage-gated calcium channels, thus linking vesicle endocytosis to calcium regulation. They also play roles in virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. Endophilins contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. They are classified into two types, A and B. Endophilin-A proteins are enriched in the brain and play multiple roles in receptor-mediated
>cd07616 BAR_Endophilin_B1 The Bin/Amphiphysin/Rvs (BAR) domain of Endophilin-B1
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Endophilins play roles in synaptic vesicle formation, virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. Endophilins contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. They are classified into two types, A and B. Endophilin-B proteins are cytoplasmic proteins expressed mainly in the heart, placenta, and skeletal muscle. Endophilin-B1, also called Bax-interacting factor 1 (Bif-1) or SH3GLB1 (SH3-domain GRB2-like endophilin B1), is localized mainly to the Golgi apparatus. It is involved in the regulation of many biological events including autophagy, tumorigenesis, nerve growth fact
>cd07604 BAR_ASAPs The Bin/Amphiphysin/Rvs (BAR) domain of ArfGAP with SH3 domain, ANK repeat and PH domain containing proteins
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. This subfamily is composed of ASAPs (ArfGAP with SH3 domain, ANK repeat and PH domain containing proteins), which are Arf GTPase activating proteins (GAPs) with similarity to ACAPs (ArfGAP with Coiled-coil, ANK repeat and PH domain containing proteins) in that they contain an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, and ankyrin (ANK) repeats. However, ASAPs contain an additional C-terminal SH3 domain. ASAPs function in regulating cell growth, migration, and invasion. Vertebrates contain at least three members, ASAP1, ASAP2, and ASAP3. ASAP1 and ASAP2 shows GTPase activating protein (GAP) activity towards Arf1 and Arf5. They do not show GAP activity towards Arf6, but is able to mediate
>cd07648 F-BAR_FCHO The F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs) domain of FCH domain Only proteins
F-BAR domains are dimerization modules that bind and bend membranes and are found in proteins involved in membrane dynamics and actin reorganization. Proteins in this group have been named FCH domain Only (FCHO) proteins. Vertebrates have two members, FCHO1 and FCHO2. These proteins contain an F-BAR domain and a C-terminal domain of unknown function named SAFF which is also present in endophilin interacting protein 1. F-BAR domains form banana-shaped dimers with a positively-charged concave surface that binds to negatively-charged lipid membranes. They can induce membrane deformation in the form of long tubules.
>cd07638 BAR_ACAP2 The Bin/Amphiphysin/Rvs (BAR) domain of ArfGAP with Coiled-coil, ANK repeat and PH domain containing protein 2
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. ACAP2 (ArfGAP with Coiled-coil, ANK repeat and PH domain containing protein 2), also called centaurin beta-2, is an Arf6-specific GTPase activating protein (GAP) which mediates Arf6 signaling. Arf6 is involved in the regulation of endocytosis, phagocytosis, cell adhesion and migration. ACAP2 contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, and C-terminal ankyrin (ANK) repeats. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>cd07606 BAR_SFC_plant The Bin/Amphiphysin/Rvs (BAR) domain of the plant protein SCARFACE (SFC)
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions including organelle biogenesis, membrane trafficking or remodeling, and cell division and migration. The plant protein SCARFACE (SFC), also called VAscular Network 3 (VAN3), is a plant ACAP (ArfGAP with Coiled-coil, ANK repeat and PH domain containing protein), an Arf GTPase Activating Protein (GAP) that plays a role in the trafficking of auxin efflux regulators from the plasma membrane to the endosome. It is required for the normal vein patterning in leaves. SCF contains an N-terminal BAR domain, followed by a Pleckstrin Homology (PH) domain, an Arf GAP domain, and C-terminal ankyrin (ANK) repeats. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>cd07651 F-BAR_PombeCdc15_like The F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs) domain of Schizosaccharomyces pombe Cdc15, and similar proteins
F-BAR domains are dimerization modules that bind and bend membranes and are found in proteins involved in membrane dynamics and actin reorganization. This subfamily is composed of Schizosaccharomyces pombe Cdc15 and Imp2, and similar proteins. These proteins contain an N-terminal F-BAR domain and a C-terminal SH3 domain. S. pombe Cdc15 and Imp2 play both distinct and overlapping roles in the maintenance and strengthening of the contractile ring at the division site, which is required in cell division. Cdc15 is a component of the actomyosin ring and is required in normal cytokinesis. Imp2 colocalizes with the medial ring during septation and is required for normal septation. F-BAR domains form banana-shaped dimers with a positively-charged concave surface that binds to negatively-charged lipid membranes. They can induce membrane deformation
>cd07635 BAR_GRAF2 The Bin/Amphiphysin/Rvs (BAR) domain of GTPase Regulator Associated with Focal adhesion 2
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. GTPase Regulator Associated with Focal adhesion kinase 2 (GRAF2), also called Rho GTPase activating protein 10 (ARHGAP10) or PS-GAP, is a GAP with activity towards Cdc42 and RhoA which regulates caspase-activated p21-activated protein kinase-2 (PAK-2p34). GRAF2 interacts with PAK-2p34, leading to its stabilization and decrease of cell death. It is highly expressed in skeletal muscle and also interacts with PKNbeta, which is a target of Rho. GRAF2 contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, a Rho GAP domain, and a C-terminal SH3 domain. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions. The BAR domain of the related prote
>cd07602 BAR_RhoGAP_OPHN1-like The Bin/Amphiphysin/Rvs (BAR) domain of Oligophrenin1-like Rho GTPase Activating Proteins
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. This subfamily is composed of Rho and Rac GTPase activating proteins (GAPs) with similarity to oligophrenin1 (OPHN1). Members contain an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, and a Rho GAP domain. Some members contain a C-terminal SH3 domain. Vertebrates harbor at least three Rho GAPs in this subfamily including OPHN1, GTPase Regulator Associated with Focal adhesion kinase (GRAF), GRAF2, and an uncharacterized protein called GAP10-like. OPHN1, GRAF and GRAF2 show GAP activity towards RhoA and Cdc42. In addition, OPHN1 is active towards Rac. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions. The BAR domains of OPHN1
>cd07636 BAR_GRAF The Bin/Amphiphysin/Rvs (BAR) domain of GTPase Regulator Associated with Focal adhesion kinase
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. GTPase Regulator Associated with Focal adhesion kinase (GRAF), also called Rho GTPase activating protein 26 (ARHGAP26), is a GAP with activity towards RhoA and Cdc42 and is only weakly active towards Rac1. It influences Rho-mediated cytoskeletal rearrangements and binds focal adhesion kinase (FAK), which is a critical component of integrin signaling. GRAF contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, a Rho GAP domain, and a C-terminal SH3 domain. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions. The BAR domain of GRAF directly interacts with its Rho GAP domain and inhibits its activity. Autoinhibited GRAF is capable o
>cd07653 F-BAR_CIP4-like The F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs) domain of Cdc42-Interacting Protein 4 and similar proteins
F-BAR domains are dimerization modules that bind and bend membranes and are found in proteins involved in membrane dynamics and actin reorganization. This subfamily is composed of Cdc42-Interacting Protein 4 (CIP4), Formin Binding Protein 17 (FBP17), FormiN Binding Protein 1-Like (FNBP1L), and similar proteins. CIP4 and FNBP1L are Cdc42 effectors that bind Wiskott-Aldrich syndrome protein (WASP) and function in endocytosis. CIP4 and FBP17 bind to the Fas ligand and may be implicated in the inflammatory response. CIP4 may also play a role in phagocytosis. Members of this subfamily typically contain an N-terminal F-BAR domain and a C-terminal SH3 domain. In addition, some members such as FNBP1L contain a central Cdc42-binding HR1 domain. F-BAR domains form banana-shaped dimers with a positively-charged concave surface that binds to negatively-charged l
>cd07634 BAR_GAP10-like The Bin/Amphiphysin/Rvs (BAR) domain of Rho GTPase activating protein 10-like
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. This group is composed of uncharacterized proteins called Rho GTPase activating protein (GAP) 10-like. GAP10-like may be a GAP with activity towards RhoA and Cdc42. Similar to GRAF and GRAF2, it contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, a Rho GAP domain, and a C-terminal SH3 domain. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions. The BAR domains of the related proteins GRAF and OPHN1, directly interact with their Rho GAP domains and inhibit theiractivity. The autoinhibited proteins are capable of binding membranes and tubulating liposomes, showing that the membrane-tubulation and GAP-inhibitory functions of the BAR domain
>cd07637 BAR_ACAP3 The Bin/Amphiphysin/Rvs (BAR) domain of ArfGAP with Coiled-coil, ANK repeat and PH domain containing protein 3
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. ACAP3 (ArfGAP with Coiled-coil, ANK repeat and PH domain containing protein 3), also called centaurin beta-5, is presumed to be an Arf GTPase activating protein (GAP) based on its similarity to the Arf6-specific GAPs ACAP1 and ACAP2. The specific function of ACAP3 is still unknown. ACAP3 contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, and C-terminal ankyrin (ANK) repeats. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>KOG3725 consensus SH3 domain protein SH3GLB [Signal transduction mechanisms]
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Endophilins play roles in synaptic vesicle formation, virus budding, mitochondrial morphology maintenance, receptor-mediated endocytosis inhibition, and endosomal sorting. Endophilins contain an N-terminal N-BAR domain (BAR domain with an additional N-terminal amphipathic helix), followed by a variable region containing proline clusters, and a C-terminal SH3 domain. They are classified into two types, A and B. Vertebrates contain two endophilin-B isoforms. Endophilin-B proteins are cytoplasmic proteins expressed mainly in the heart, placenta, and skeletal muscle. Endophilin-B2, also called SH3GLB2 (SH3-domain GRB2-like endophilin B2), is a cytoplasmic protein that interacts with the apoptosis inducer Bax. It is overexpressed in prostate cancer metastasis and has been identified
F-BAR domains are dimerization modules that bind and bend membranes and are found in proteins involved in membrane dynamics and actin reorganization. FCH domain Only 1 (FCHO1) may be involved in clathrin-coated vesicle formation. It contains an N-terminal F-BAR domain and a C-terminal domain of unknown function named SAFF which is also present in FCHO2 and endophilin interacting protein 1. F-BAR domains form banana-shaped dimers with a positively-charged concave surface that binds to negatively-charged lipid membranes. They can induce membrane deformation in the form of long tubules.
The BAR domain of Arfaptin-like proteins, also called the Arfaptin domain, is a dimerization and lipid binding module that can detect and drive membrane curvature. Arfaptins are ubiquitously expressed proteins implicated in mediating cross-talk between Rac, a member of the Rho family GTPases, and Arf (ADP-ribosylation factor) small GTPases. Arfaptins bind to GTP-bound Arf1, Arf5, and Arf6, with strongest binding to GTP-Arf1. Arfaptins also bind to Rac-GTP and Rac-GDP with similar affinities. The Arfs are thought to bind to the same surface as Rac, and their binding is mutually exclusive. Mammals contain at least two isoforms of Arfaptin. Arfaptin 1 has been shown to inhibit the activation of Arf-dependent phospholipase D (PLD) and the secretion of matrix metalloproteinase-9 (MMP-9), an enzyme implicated in cancer invasiveness and metastasis. Arfaptin 2 regulates the aggregation of the protein huntingtin, which is im
>PF10455 BAR_2: Bin/amphiphysin/Rvs domain for vesicular trafficking; InterPro: IPR018859 Endocytosis and intracellular transport involve several mechanistic steps: (1) for the internalisation of cargo molecules, the membrane needs to bend to form a vesicular structure, which requires membrane curvature and a rearrangement of the cytoskeleton; (2) following its formation, the vesicle has to be pinched off the membrane; (3) the cargo has to be subsequently transported through the cell and the vesicle must fuse with the correct cellular compartment
Members of the Amphiphysin protein family are key regulators in the early steps of endocytosis, involved in the formation of clathrin-coated vesicles by promoting the assembly of a protein complex at the plasma membrane and directly assist in the induction of the high curvature of the membrane at the neck of the vesicle. Amphiphysins contain a characteristic domain, known as the BAR (Bin-Amphiphysin-Rvs)-domain, which is required for their in vivo function and their ability to tubulate membranes []. The crystal structure of these proteins suggest the domain forms a crescent-shaped dimer of a three-helix coiled coil with a characteristic set of conserved hydrophobic, aromatic and hydrophilic amino acids. Proteins containing this domain have been shown to homodimerise, heterodimerise or, in a few cases, interact with small GTPases. This entry identifies several fungal BAR domain proteins, such as Gvp36, that are not found by IPR004148 from INTERPRO [].
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. ACAP1 (ArfGAP with Coiled-coil, ANK repeat and PH domain containing protein 1), also called centaurin beta-1, is an Arf6-specific GTPase activating protein (GAP) which mediates Arf6 signaling. Arf6 is involved in the regulation of endocytosis, phagocytosis, cell adhesion and migration. ACAP1 also participates in the cargo sorting and recycling of the transferrin receptor and integrin beta1. It may also play a role in innate immune responses. ACAP1 contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, and C-terminal ankyrin (ANK) repeats. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>PF10168 Nup88: Nuclear pore component; InterPro: IPR019321 Nup88 can be divided into two structural domains; the N-terminal two-thirds of the protein have no obvious structural motifs
It is, however, where it binds to Nup98; one of the components of the nuclear pore. The C-terminal end is a predicted coiled-coil domain []. Nup88 is over expressed in tumour cells [].
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. ASAP2 (ArfGAP with SH3 domain, ANK repeat and PH domain containing protein 2) is also known as DDEF2 (Development and Differentiation Enhancing Factor 2), AMAP2, centaurin beta-3, or PAG3. ASAP2 mediates the functions of Arf GTPases vial dual mechanisms: it exhibits GTPase activating protein (GAP) activity towards class I (Arf1) and II (Arf5) Arfs; and binds class III Arfs (GTP-Arf6) stably without GAP activity. It binds paxillin and is implicated in Fcgamma receptor-mediated phagocytosis in macrophages and in cell migration. ASAP2 contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, an Arf GAP domain, ankyrin (ANK) repeats, and a C-terminal SH3 domain. BAR domains form dimers that bind to membranes, i
>PF07295 DUF1451: Protein of unknown function (DUF1451); InterPro: IPR009912 This family consists of several hypothetical bacterial proteins of around 160 residues in length
Members of this family contain four highly conserved cysteine resides toward the C-terminal region of the protein. The function of this family is unknown.
>cd07655 F-BAR_PACSIN The F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs) domain of Protein kinase C and Casein kinase Substrate in Neurons (PACSIN) proteins
F-BAR domains are dimerization modules that bind and bend membranes and are found in proteins involved in membrane dynamics and actin reorganization. Protein kinase C and Casein kinase Substrate in Neurons (PACSIN) proteins, also called Synaptic dynamin-associated proteins (Syndapins), act as regulators of cytoskeletal and membrane dynamics. They bind both dynamin and Wiskott-Aldrich syndrome protein (WASP), and may provide direct links between the actin cytoskeletal machinery through WASP and dynamin-dependent endocytosis. Vetebrates harbor three isoforms with distinct expression patterns and specific functions. PACSINs contain an N-terminal F-BAR domain and a C-terminal SH3 domain. F-BAR domains form banana-shaped dimers with a positively-charged concave surface that binds to negatively-charged lipid membranes. They can induce
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Adaptor protein, Phosphotyrosine interaction, PH domain and Leucine zipper containing (APPL) proteins are effectors of the small GTPase Rab5 that function in endosome-mediated signaling. They contain BAR, pleckstrin homology (PH) and phosphotyrosine binding (PTB) domains. They form homo- and hetero-oligomers that are mediated by their BAR domains. Vertebrates contain two APPL proteins, APPL1 and APPL2. APPL1 interacts with diverse receptors (e.g. NGF receptor TrkA, FSHR, adiponectin receptors) and signaling proteins (e.g. Akt, PI3K), and may function as an adaptor linked to many distinct signaling pathways. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be invo
>cd07676 F-BAR_FBP17 The F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs) domain of Formin Binding Protein 17
Probab=86.91 E-value=13 Score=29.11 Aligned_cols=66 Identities=11% Similarity=0.151 Sum_probs=49.8
Q ss_pred HHHHHHHHHHHHHHHHHHHHHHHHHHHH---------------HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
Q 032820 50 IRKIEELKETIRVTEDAKSVAINEYERI---------------KENNRTELERLDKERRADFLNMLKGFVVNQVGYAEKI 114 (133)
Q Consensus 50 ~~K~~~l~~eI~~~e~~v~~a~~~~e~i---------------~~~~~~E~~RF~~ek~~d~k~~l~~fa~~qi~~~~~~ 114 (133)
...+++++.....-.+.++.++.+|..- ...+..-++.|+..|...|+++|..|+...-.....+
T Consensus 162 k~~~eK~k~~~~~~~~~~e~aKn~Y~~~l~~~N~~q~~~Y~e~mp~vfd~lQ~lee~Ri~~l~e~l~~~~~~e~~~~~~i 241 (253)
T cd07676 162 KADVEKARQQAQIRHQMAEDSKAEYSSYLQKFNKEQHEHYYTHIPNIFQKIQEMEERRIGRVGESMKTYAEVDRQVIPII 241 (253)
T ss_pred HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhhhhHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHhHHH
Confidence 4666678888888888888888775433 3345566799999999999999999998877666544
Q ss_pred H
Q 032820 115 A 115 (133)
Q Consensus 115 ~ 115 (133)
.
T Consensus 242 ~ 242 (253)
T cd07676 242 G 242 (253)
T ss_pred H
Confidence 3
F-BAR domains are dimerization modules that bind and bend membranes and are found in proteins involved in membrane dynamics and actin reorganization. Formin Binding Protein 17 (FBP17), also called FormiN Binding Protein 1 (FNBP1), is involved in dynamin-mediated endocytosis. It is recruited to clathrin-coated pits late in the endocytosis process and may play a role in the invagination and scission steps. FBP17 binds in vivo to tankyrase, a protein involved in telomere maintenance and mitogen activated protein kinase (MAPK) signaling. F-BAR domains form banana-shaped dimers with a positively-charged concave surface that binds to negatively-charged lipid membranes. They can induce membrane deformation in the form of long tubules.
>cd07633 BAR_OPHN1 The Bin/Amphiphysin/Rvs (BAR) domain of Oligophrenin-1
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Oligophrenin-1 (OPHN1) is a GTPase activating protein (GAP) with activity towards RhoA, Rac, and Cdc42, that is expressed in developing spinal cord and in adult brain areas with high plasticity. It plays a role in regulating the actin cystoskeleton as well as morphology changes in axons and dendrites, and may also function in modulating neuronal connectivity. Mutations in the OPHN1 gene causes X-linked mental retardation associated with cerebellar hypoplasia, lateral ventricle enlargement and epilepsy. OPHN1 contains an N-terminal BAR domain, followed by a Pleckstrin homology (PH) domain, and a Rho GAP domain. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>KOG1772 consensus Vacuolar H+-ATPase V1 sector, subunit G [Energy production and conversion]
>PF11559 ADIP: Afadin- and alpha -actinin-Binding; InterPro: IPR021622 This family is found in mammals where it is localised at cell-cell adherens junctions [], and in Sch
pombe and other fungi where it anchors spindle-pole bodies to spindle microtubules []. It is a coiled-coil structure, and in pombe, it is required for anchoring the minus end of spindle microtubules to the centrosome equivalent, the spindle-pole body. The name ADIP derives from the family being composed of Afadin- and alpha -Actinin-Binding Proteins Localised at Cell-Cell Adherens Junctions.
>cd07673 F-BAR_FCHO2 The F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs) domain of FCH domain Only 2 protein
F-BAR domains are dimerization modules that bind and bend membranes and are found in proteins involved in membrane dynamics and actin reorganization. The specific function of FCH domain Only 2 (FCHO2) is still unknown. It contains an N-terminal F-BAR domain and a C-terminal domain of unknown function named SAFF which is also present in FCHO1 and endophilin interacting protein 1. F-BAR domains form banana-shaped dimers with a positively-charged concave surface that binds to negatively-charged lipid membranes. They can induce membrane deformation in the form of long tubules.
>KOG4796 consensus RNA polymerase II elongation factor [Transcription]
The BAR domain of Arfaptin-like proteins, also called the Arfaptin domain, is a dimerization, lipid binding and curvature sensing module present in Arfaptins, PICK1, ICA69, and similar proteins. Arfaptins are ubiquitously expressed proteins implicated in mediating cross-talk between Rac, a member of the Rho family GTPases, and Arf (ADP-ribosylation factor) small GTPases. Arfaptins bind to GTP-bound Arf1, Arf5, and Arf6, with strongest binding to GTP-Arf1. Arfaptins also binds to Rac-GTP and Rac-GDP with similar affinities. The Arfs are thought to bind to the same surface as Rac, and their binding is mutually exclusive. Protein Interacting with C Kinase 1 (PICK1) plays a key role in the trafficking of AMPA receptors, which are critical for regulating synaptic strength and may be important in cellular processes involved in learning and memory. Is
>cd07601 BAR_APPL The Bin/Amphiphysin/Rvs (BAR) domain of Adaptor protein, Phosphotyrosine interaction, PH domain and Leucine zipper containing proteins
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Adaptor protein, Phosphotyrosine interaction, PH domain and Leucine zipper containing (APPL) proteins are effectors of the small GTPase Rab5 that function in endosome-mediated signaling. They contain BAR, pleckstrin homology (PH) and phosphotyrosine binding (PTB) domains. They form homo- and hetero-oligomers that are mediated by their BAR domains, and are localized to cytoplasmic membranes. Vertebrates contain two APPL proteins, APPL1 and APPL2. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions.
>cd07632 BAR_APPL2 The Bin/Amphiphysin/Rvs (BAR) domain of Adaptor protein, Phosphotyrosine interaction, PH domain and Leucine zipper containing 2
BAR domains are dimerization, lipid binding and curvature sensing modules found in many different proteins with diverse functions. Adaptor protein, Phosphotyrosine interaction, PH domain and Leucine zipper containing (APPL) proteins are effectors of the small GTPase Rab5 that function in endosome-mediated signaling. They contain BAR, pleckstrin homology (PH) and phosphotyrosine binding (PTB) domains. They form homo- and hetero-oligomers that are mediated by their BAR domains. Vertebrates contain two APPL proteins, APPL1 and APPL2. Both APPL proteins interact with the transcriptional repressor Reptin, acting as activators of beta-catenin/TCF-mediated trancription. APPL2 is essential for cell proliferation. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interac
>cd07661 BAR_ICA69 The Bin/Amphiphysin/Rvs (BAR) domain of Islet Cell Autoantigen 69-kDa
The BAR domain of Arfaptin-like proteins, also called the Arfaptin domain, is a dimerization and lipid binding module that can detect and drive membrane curvature. Islet cell autoantigen 69-kDa (ICA69) is a diabetes-associated autoantigen that is highly expressed in brain and beta cells. It is involved in membrane trafficking at the Golgi complex in neurosecretory cells. It is coexpressed with Protein Interacting with C Kinase 1 (PICK1), also a the BAR domain containing protein, in many tissues at different developmental stages. In neurons, ICA69 colocalizes with PICK1 in cell bodies and dendrites but is absent in synapses where PICK1 is enriched. ICA69 contains an N-terminal BAR domain and a conserved C-terminal domain of unknown function. BAR domains form dimers that bind to membranes, induce membrane bending and curvature, and may also be involved in protein-protein interactions. ICA69 associate
>PF01025 GrpE: GrpE; InterPro: IPR000740 Molecular chaperones are a diverse family of proteins that function to protect proteins in the intracellular milieu from irreversible aggregation during synthesis and in times of cellular stress
The bacterial molecular chaperone DnaK is an enzyme that couples cycles of ATP binding, hydrolysis, and ADP release by an N-terminal ATP-hydrolysing domain to cycles of sequestration and release of unfolded proteins by a C-terminal substrate binding domain. In prokaryotes the grpE protein. Dimeric GrpE is the co-chaperone for DnaK, and acts as a nucleotide exchange factor, stimulating the rate of ADP release 5000-fold []. DnaK is itself a weak ATPase; ATP hydrolysis by DnaK is stimulated by its interaction with another co-chaperone, DnaJ. Thus the co-chaperones DnaJ and GrpE are capable of tightly regulating the nucleotide-bound and substrate-bound state of DnaK in ways that are necessary for the normal housekeeping functions and stress-related functions of the DnaK molecular chaperone cycle. The X-ray crystal structure of GrpE in complex with the ATPase domain of DnaK revealed that GrpE is an asymmetric homodimer, bent in a manner that favours extensive contacts with only one DnaKATPase monomer []. GrpE does not actively compete for the atomic positions occupied by the nucleotide. GrpE and ADP mutually reduce one another's affinity for DnaK 200-fold, and ATP instantly dissociates GrpE from DnaK.; GO: 0000774 adenyl-nucleotide exchange factor activity, 0042803 protein homodimerization activity, 0051087 chaperone binding, 0006457 protein folding; PDB: 3A6M_A 4ANI_A 1DKG_B.
>KOG0250 consensus DNA repair protein RAD18 (SMC family protein) [Replication, recombination and repair]
F-BAR domains are dimerization modules that bind and bend membranes and are found in proteins involved in membrane dynamics and actin reorganization. Fer (Fes related) is a cytoplasmic (or nonreceptor) tyrosine kinase expressed in a wide variety of tissues, and is found to reside in both the cytoplasm and the nucleus. It plays important roles in neuronal polarization and neurite development, cytoskeletal reorganization, cell migration, growth factor signaling, and the regulation of cell-cell interactions mediated by adherens junctions and focal adhesions. Fer kinase also regulates cell cycle progression in malignant cells. It contains an N-terminal F-BAR domain, an SH2 domain, and a C-terminal catalytic kinase domain. F-BAR domains form banana-shaped dimers with a positively-charged concave surface that binds to negatively-charged lipid membranes. They can induce membran
>2x3v_A Syndapin I, protein kinase C and casein kinase substrate in N protein 1; BAR, N-WAsp, dynamin, pacsin 1, endocytosis; 2.45A {Mus musculus} PDB: 2x3w_A 2x3x_A
>3lay_A Zinc resistance-associated protein; salmonella typhimurium L structural genomics, center for structural genomics of INFE diseases; 2.70A {Salmonella enterica subsp}
