6DDE

Mu Opioid Receptor-Gi Protein Complex


ChainDomainClassArchitectureTopologyHomology
A3.40.50.300 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold P-loop containing nucleotide triphosphate hydrolases
B2.130.10.10 Mainly Beta 7 Propeller Methylamine Dehydrogenase Chain H
D2.60.40.10 Mainly Beta Sandwich Immunoglobulin-like Immunoglobulins
E1.20.1070.10 Mainly Alpha Up-down Bundle Rhopdopsin 7-helix transmembrane proteins Rhodopsin 7-helix transmembrane proteins
C4.10.260.10 Few Secondary Structures Irregular G Protein Gi Gamma 2 Transducin (heterotrimeric G protein), gamma chain

Protein Family Annotation Pfam Database Homepage

ChainsAccessionIdentifierDescriptionCommentsSource
APF00503G-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
BPF00400WD domain, G-beta repeat (WD40)WD domain, G-beta repeat- Repeat
EPF000017 transmembrane receptor (rhodopsin family) (7tm_1)7 transmembrane receptor (rhodopsin family)- Family
CPF00631GGL domain (G-gamma)GGL domainG-protein gamma like domains (GGL) are found in the gamma subunit of the heterotrimeric G protein complex and in regulators of G protein signaling (RGS) proteins [1]. It is also found fused to an inactive Galpha in the Dictyostelium protein gbqA [2] ...G-protein gamma like domains (GGL) are found in the gamma subunit of the heterotrimeric G protein complex and in regulators of G protein signaling (RGS) proteins [1]. It is also found fused to an inactive Galpha in the Dictyostelium protein gbqA [2]. G-gamma likely shares a common origin with the helical N-terminal unit of G-beta [2]. All organisms that posses a G-beta possess a G-gamma [2].
Domain

Gene Product Annotation Gene Product Annotation

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
AGuanine nucleotide-binding protein G(i) subunit alpha-1
BGuanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
EscFv16none none none
RMu-type opioid receptor
DDAMGOnone none none
CGuanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2