RasGTP effectors (in cases of AF6, canoe and RalGDS); putative RasGTP effectors in other cases. Kalhammer et al. have shown that not all RA domains bind RasGTP. Predicted structure similar to that determined, and that of the RasGTP-binding domain of Raf kinase. Predicted RA domains in PLC210 and nore1 found to bind RasGTP. Included outliers (Grb7, Grb14, adenylyl cyclases etc.)
>PF00788 RA: Ras association (RalGDS/AF-6) domain; InterPro: IPR000159 Proteins with this domain are mostly RasGTP effectors and include guanine-nucleotide releasing factor in mammals []
This factor stimulates the dissociation of GDP from the Ras-related RALA and RALB GTPases, which allows GTP binding and activation of the GTPases. It interacts and acts as an effector molecule for R-ras, K-Ras and Rap []. The domain is also present in a number of other proteins among them the sexual differentiation protein in yeast that is essential for mating and meiosis and yeast adenylate cyclase. These proteins contain repeated leucine-rich (LRR) segments.; GO: 0007165 signal transduction; PDB: 3EC8_A 2C5L_D 2BYF_A 2CS4_A 3KH0_A 2B3A_A 1RAX_A 2RGF_A 1WGR_A 1WXA_A ....
The RA (Ras-associating) domain is structurally similar to ubiquitin and is present in one or two copies in a number of signalling molecules that bind and regulate a small GTPase called Ras or the Ras-related GTPases, Ral and Rap. RA-containing proteins include RalGDS, AF6, RIN1, RASSF1, SNX27, CYR1, STE50, and phospholipase C epsilon.
>cd01781 AF6_RA_repeat2 Ubiquitin domain of AT-6, second repeat
The AF-6 protein (also known as afadin and canoe) is a multidomain cell junction protein that contains two N-terminal Ras-associating (RA) domains in addition to FHA (forkhead-associated), DIL (class V myosin homology region), and PDZ domains and a proline-rich region. AF6 acts downstream of the Egfr (Epidermal Growth Factor-receptor)/Ras signalling pathway and provides a link from Egfr to cytoskeletal elements.
>cd01783 DAGK_delta_RA Ubiquitin-like domain of Diacylgylcerol kinase (DAGK)
DAGK_delta_RA Diacylgylcerol kinase (DAGK) phosphorylates the second messenger diacylglycerol to phosphatidic acid as part of a protein kinase C pathway. Nine mammalian DAGK isotypes have been identified, which are classified into five subgroups according to their domain architecture and the DAGK-delta and -theta isozymes, which fall into one such group, contain an RA (Ras-associated) domain. DAGKs also contain a conserved catalytic domain (DAGKc), an assesory domain (DAGKa), and an array of conserved motifs that are likely to play a role in lipid-protein and protein-protein interactions in various DAG/PA-dependent signalling pathways.
>cd01775 CYR1_RA Ubiquitin domain of CYR1 adenylate cyclase
CYR1 is a fungal adenylate cyclase with at least four domains, an N-terminal RA (Ras association) domain, a middle leucine-rich repeat domain, a catalytic domain. The N-terminal RA domain of CYR1 post-translationally modifies a small GTPase called Ras. The Ras-CYR1 pathway has been implicated in the transduction of a glucose-triggered signal to an intracellular environment where a protein phosphorylation cascade is initiated by cyclic AMP.
>cd01779 Myosin_IXb_RA ubitquitin-like domain of Myosin_IXb_RA
Myosin_IXb_RA RasGTP binding domain from guanine nucleotide exchange factors. In some proteins the domain acts as a RasGTP effector (AF6, canoe and RalGDS, for example), but in other cases it may not bind to RasGTP at all.
>cd01778 RASSF1_RA Ubiquitin-like domain of RASSF1 tumour supproessor protein
RASSF1 (also known as RASSF3 and NORE1) is a tumour suppressor protein with a C-terminal Ras-associating (RA) domain that binds Ras. RASSF1 also binds the proapoptotic protein kinase MST1 and is thus thought to regulate the proapoptotic signalling pathway. RASSF1 also associates with microtubule-associated proteins like MAP1B and regulates tubulin polymerization. RASSF1 also binds CDC20 and regulates mitosis by inhibiting the anaphase-promoting complex and preventing degradation of cyclin A and cyclin B until the spindle checkpoint becomes fully operational.
>cd01787 GRB7_RA RA (RAS-associated like) domain of Grb7
Grb7_RA The RA (RAS-associated like) domain of Grb7. Grb7 is an adaptor molecule that mediates signal transduction from multiple cell surface receptors to various downstream signaling pathways. Grb7 and its related family members Grb10 and Grb14 share a conserved domain architecture that includes an amino-terminal proline-rich region, a central segment termed the GM region (for Grb and Mig) which includes the RA, PIR, and PH domains, and a carboxyl-terminal SH2 domain. Grb7/10/14 family proteins are phosphorylated on serine/threonine as well as tyrosine residues and are mainly localized to the cytoplasm.
>cd01784 rasfadin_RA Ubiquitin-like domain of Rasfadin
rasfadin_RA Rasfadin (RASSF2) belongs to a family of Ras effectors/tumor suppressors that includes RASSF1 and NORE1. RASSF2 binds directly to K-Ras in a GTP-dependent manner via its RA (RAS-associated) domain. RASSF2 promotes apoptosis and cell cycle arrest and is frequently down-regulated in lung tumor cell lines
>cd01782 AF6_RA_repeat1 Ubiquitin domain of AT-6, first repeat
The AF-6 protein (also known as afadin and canoe) is a multidomain cell junction protein that contains two N-terminal Ras-associating (RA) domains in addition to FHA (forkhead-associated), DIL (class V myosin homology region), and PDZ domains and a proline-rich region. AF6 acts downstream of the Egfr (Epidermal Growth Factor-receptor)/Ras signalling pathway and provides a link from Egfr to cytoskeletal elements.
>cd01786 STE50_RA Ubiquitin-like domain of STE50_RA
STE50_RA The fungal adaptor protein STE50 is an essential component of three MAPK-mediated signalling pathways, which control the mating response, invasive/filamentous growth and osmotolerance (HOG pathway), respectively. STE50 functions in cell signalling between the activated G protein and STE11. The domain architecture of STE50 includes an amino-terminal SAM (sterile alpha motif) domain in addition to the carboxy-terminal ubiquitin-like RA (RAS-associated) domain. While the SAM domain interacts with STE11, the RA domain interacts with CDC42 and RAS. Modulation of signal transduction by STE50 specifically affects the pheromone-response pathway in yeast.
1 homologues. Also known as ezrin/radixin/moesin (ERM) protein domains. Present in myosins, ezrin, radixin, moesin, protein tyrosine phosphatases. Plasma membrane-binding domain. These proteins play structural and regulatory roles in the assembly and stabilization of specialized plasmamembrane domains. Some PDZ domain containing proteins bind one or more of this family. Now includes JAKs.
PLC_epsilon_RA Phosphatidylinositide-specific phospholipase C (PLC) is a signaling enzyme that hydrolyzes membrane phospholipids to generate inositol triphosphate. PLC-epsilon represents a novel forth class of PLC that has a PLC catalytic core domain, a CDC25 guanine nucleotide exchange factor domain and two RA (Ras-association) domains of which the second is critical for Ras activation of the enzyme.
>cd01777 SNX27_RA Ubiquitin domain of SNX27 (sorting nexin protein 27)
SNX27_RA SNX27 (sorting nexin protein 27) belongs to a large family of endosome-localized proteins related to sorting nexin1 which is implicated in regulating membrane traffic. The domain architecture of SNX27 includes an amino-terminal PDZ domain, a PX (PhoX homologous) domain, and a carboxy-terminal RA (RAS-associated) domain.
Phox and Bem1p domain, present in many eukaryotic cytoplasmic signalling proteins. The domain adopts a beta-grasp fold, similar to that found in ubiquitin and Ras-binding domains. A motif, variously termed OPR, PC and AID, represents the most conserved region of the majority of PB1 domains, and is necessary for PB1 domain function. This function is the formation of PB1 domain heterodimers, although not all PB1 domain pairs associate.
>cd01776 Rin1_RA Ubiquitin domain of RIN1 RAS effector
Rin1_RA RIN1 is a RAS effector that binds with specificity and high affinity to activated RAS via its carboxy-terminal RA (RAS-associated) domain. RIN1 competes directly with RAF1 for RAS binding and is thought to divert signaling away from RAF and the MAPK pathway while also shunting RAS signals through alternate pathways. In addition, Rin1 and Rin2 are Rab5-binding proteins, binding preferentially to the GTP-bound form, that enhance the GDP-GTP exchange reaction on Rab5 that regulate the docking and fusion processes of endocytic vesicles. In addition to the RA domain, RIN1 and RIN2 have an SH2 (Src homology 2) domain, a proline-rich SH3 domain, and a Vps9 domain.
Conserved hypothetical protein; SAD, bacteroides t
82.49
>2cs4_A Protein C12ORF2; GTP binding, ubiquitin fold, structural genomics, NPPSFA, national project on protein structural and functional analyses; NMR {Homo sapiens} SCOP: d.15.1.5
>3pvl_A Myosin VIIA isoform 1; protein complex, novel folding, protein cargo binding, cargo proteins, motor protein-protein transport complex; 2.80A {Mus musculus}