9O38 | pdb_00009o38

Transmembrane domains of the human sweet receptor (TAS1R2 + TAS1R3) from Class 3 particles (rigidly fitted from PDB:9NOX and 9NOR)


Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
C [auth D]SCOP2B SuperfamilyTransducin (heterotrimeric G protein), gamma chain 8070798 3001771 SCOP2B (2022-06-29)

SAbDab Antibody Annotation SAbDab Database Homepage

ChainChain ClassChain SubclassChain TypeAntigen Name(s) Provenance Source
D [auth E]Heavy ChainIGHV3 -taste receptor type 1 member 3,guanine nucleotide-bindingprotein g(s) subunit alpha isoforms short | guanine nucleotide-binding protein g(i)/g(s)/g(t) subunitbeta-1 SAbDab (2025-10-17)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A [auth B],
F
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
B [auth C]PF00400WD domain, G-beta repeat (WD40)WD domain, G-beta repeat- Repeat
E [auth A]PF000037 transmembrane sweet-taste receptor of 3 GCPR (7tm_3)7 transmembrane sweet-taste receptor of 3 GCPRThis is a domain of seven transmembrane regions that forms the C-terminus of some subclass 3 G-coupled-protein receptors. It is often associated with a downstream cysteine-rich linker domain, NCD3G Pfam:PF07562, which is the human sweet-taste recepto ...This is a domain of seven transmembrane regions that forms the C-terminus of some subclass 3 G-coupled-protein receptors. It is often associated with a downstream cysteine-rich linker domain, NCD3G Pfam:PF07562, which is the human sweet-taste receptor, and the N-terminal domain, ANF_receptor Pfam:PF01094. The seven TM regions assemble in such a way as to produce a docking pocket into which such molecules as cyclamate and lactisole have been found to bind and consequently confer the taste of sweetness [1].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A [auth B],
F
Taste receptor type 1 member 3,Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
B [auth C]Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
C [auth D]Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
D [auth E]Nanobody 35 (NB35)---
E [auth A]Taste receptor type 1 member 2

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
A [auth B],
F
IPR001019Guanine nucleotide binding protein (G-protein), alpha subunitFamily
A [auth B],
F
IPR011025G protein alpha subunit, helical insertionHomologous Superfamily
A [auth B],
F
IPR027417P-loop containing nucleoside triphosphate hydrolaseHomologous Superfamily
A [auth B],
F
IPR000367G-protein alpha subunit, group SFamily
A [auth B],
F
IPR017978GPCR family 3, C-terminalDomain
A [auth B],
F
IPR017979GPCR, family 3, conserved siteConserved Site
A [auth B],
F
IPR011500GPCR, family 3, nine cysteines domainDomain
A [auth B],
F
IPR028082Periplasmic binding protein-like IHomologous Superfamily
A [auth B],
F
IPR000337GPCR, family 3Family
A [auth B],
F
IPR000068GPCR, family 3, extracellular calcium-sensing receptor-relatedFamily
A [auth B],
F
IPR038550GPCR, family 3, nine cysteines domain superfamilyHomologous Superfamily
A [auth B],
F
IPR001828Receptor, ligand binding regionDomain
B [auth C]IPR019775WD40 repeat, conserved siteConserved Site
B [auth C]IPR020472PAC1/LIS1-like, WD-40 repeatRepeat
B [auth C]IPR001632G-protein beta subunit-like, WD40 repeatsDomain
B [auth C]IPR015943WD40/YVTN repeat-like-containing domain superfamilyHomologous Superfamily
B [auth C]IPR016346G-protein subunit beta 1-5Family
B [auth C]IPR036322WD40-repeat-containing domain superfamilyHomologous Superfamily
B [auth C]IPR001680WD40 repeatRepeat
C [auth D]IPR001770G-protein, gamma subunitFamily
C [auth D]IPR015898G-protein, gamma subunit-like domainDomain
C [auth D]IPR036284G-protein gamma-like domain superfamilyHomologous Superfamily
E [auth A]IPR017978GPCR family 3, C-terminalDomain
E [auth A]IPR017979GPCR, family 3, conserved siteConserved Site
E [auth A]IPR011500GPCR, family 3, nine cysteines domainDomain
E [auth A]IPR028082Periplasmic binding protein-like IHomologous Superfamily
E [auth A]IPR000337GPCR, family 3Family
E [auth A]IPR000068GPCR, family 3, extracellular calcium-sensing receptor-relatedFamily
E [auth A]IPR038550GPCR, family 3, nine cysteines domain superfamilyHomologous Superfamily
E [auth A]IPR001828Receptor, ligand binding regionDomain

Pharos: Disease Associations Pharos Homepage Annotation

ChainsDrug Target  Associated Disease
A [auth B],
F
PharosQ7RTX0
B [auth C]PharosP62873
C [auth D]PharosP59768
E [auth A]PharosQ8TE23