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8IJ3

Cryo-EM structure of human HCAR2-Gi complex without ligand (apo state)

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Hydroxycarboxylic acid receptor 2polymer29234017.71UniProt (Q8TDS4)
Pfam (PF00001)
Homo sapiens (human)G-protein coupled receptor 109A,G-protein coupled receptor HM74A,Niacin receptor 1,Nicotinic acid receptor
2B
(B)
Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1polymer33737069.51UniProt (P62873)
Pfam (PF00400)
Homo sapiens (human)Transducin beta chain 1
3C
(C)
Guanine nucleotide-binding protein G(i) subunit alpha-1polymer35140153.71UniProt (P63096)
Pfam (PF00503)
Homo sapiens (human)Adenylate cyclase-inhibiting G alpha protein
4D
(G)
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2polymer566218.21UniProt (P59768)
Pfam (PF00631)
Homo sapiens (human)G gamma-I
5E
(S)
scFv16polymer24826424.41Homo sapiens (human)
Sequence modifications
C: 4 - 354 (UniProt: P63096)
PDBExternal DatabaseDetails
Ala 203Gly 203engineered mutation
Ser 326Ala 326engineered mutation
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains5
Total formula weight143883.5
All*Total formula weight143883.5
*Water molecules are not included.

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PDB entries from 2025-07-30

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