Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyGalpha insert domain-like 8056780 3000669 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyRas-like P-loop GTPases 8056779 3002022 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyRas-like P-loop GTPases 8056779 3002022 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyRas-like P-loop GTPases 8056779 3002022 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyGalpha insert domain-like 8056780 3000669 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyRas-like P-loop GTPases 8056779 3002022 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AG-alphae2g83A1 A: alpha arraysX: Transducin (alpha subunit), insertion domain (From Topology)H: Transducin (alpha subunit), insertion domain (From Topology)T: Transducin (alpha subunit), insertion domainF: G-alphaECOD (1.6)
ARase2g83A2 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: RasECOD (1.6)
BG-alphae2g83B1 A: alpha arraysX: Transducin (alpha subunit), insertion domain (From Topology)H: Transducin (alpha subunit), insertion domain (From Topology)T: Transducin (alpha subunit), insertion domainF: G-alphaECOD (1.6)
BRase2g83B2 A: a/b three-layered sandwichesX: P-loop domains-likeH: P-loop domains-relatedT: P-loop containing nucleoside triphosphate hydrolasesF: RasECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF00503G-protein alpha subunit (G-alpha)G-protein alpha subunitG proteins couple receptors of extracellular signals to intracellular signaling pathways. The G protein alpha subunit binds guanyl nucleotide and is a weak GTPase. A set of residues that are unique to G-alpha as compared to its ancestor the Arf-like ...G proteins couple receptors of extracellular signals to intracellular signaling pathways. The G protein alpha subunit binds guanyl nucleotide and is a weak GTPase. A set of residues that are unique to G-alpha as compared to its ancestor the Arf-like family form a ring of residues centered on the nucleotide binding site [3]. A Ggamma is found fused to an inactive Galpha in the Dictyostelium protein gbqA [3].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B
Guanine nucleotide-binding protein G(i), alpha-1 subunit
C, D
KB-1753 phage display peptide---