7T3U

IP3, ATP, and Ca2+ bound type 3 IP3 receptor in the inactive state

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D (A, B, C, D)	Inositol 1,4,5-trisphosphate receptor type 3	polymer	2633	299325.9	4	UniProt (Q14573) Pfam (PF08709) Pfam (PF02815) Pfam (PF01365) Pfam (PF08454) Pfam (PF00520)	Homo sapiens (human)	IP3 receptor isoform 3,IP3R 3,InsP3R3,Type 3 inositol 1,4,5-trisphosphate receptor,Type 3 InsP3 receptor
2	E, I, L, O (A, B, C, D)	ZINC ION	non-polymer		65.4	4	Chemie (ZN)
3	F, P (A, D)	D-MYO-INOSITOL-1,4,5-TRIPHOSPHATE	non-polymer		420.1	2	Chemie (I3P)
4	G, J, M, Q (A, B, C, D)	ADENOSINE-5'-TRIPHOSPHATE	non-polymer		507.2	4	Chemie (ATP)
5	H, K, N, R (A, B, C, D)	CALCIUM ION	non-polymer		40.1	4	Chemie (CA)

Sequence modifications

A, B, C, D: 1 - 2611 (UniProt: Q14573)
A, B, C, D: 2612 - 2633 (PDB: 7T3U)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	1197303.5
Non-Polymers*	Number of molecules	14
	Total formula weight	3290.9
All*	Total formula weight	1200594.4

*Water molecules are not included.