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9YKY

IP3/ATP-bound human type 2 IP3 receptor in the resting state

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B, C, D
(A, B, C, D)
Inositol 1,4,5-trisphosphate-gated calcium channel ITPR2polymer2769314740.84UniProt (Q14571)Homo sapiens (human)IP3 receptor isoform 2,IP3R 2,InsP3R2,Inositol 1,4,5-trisphosphate receptor type 2,Type 2 inositol 1,5-trisphosphate receptor,Type 2 InsP3 receptor
2E, H, K, N
(A, B, C, D)
D-MYO-INOSITOL-1,4,5-TRIPHOSPHATEnon-polymer420.14Chemie (I3P)
PubChem (439456)
3F, I, L, O
(A, B, C, D)
ADENOSINE-5'-TRIPHOSPHATEnon-polymer507.24Chemie (ATP)
4G, J, M, P
(A, B, C, D)
ZINC IONnon-polymer65.44Chemie (ZN)
PubChem (32051)
5Q, R, S, T
(A, B, C, D)
waterwater18.04Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains4
Total formula weight1258963.4
Non-Polymers*Number of molecules12
Total formula weight3970.7
All*Total formula weight1262934.1
*Water molecules are not included.

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PDB entries from 2026-07-01

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