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1N4K

Crystal structure of the inositol 1,4,5-trisphosphate receptor binding core in complex with IP3

Functional Information from GO Data
ChainGOidnamespacecontents
A0005220molecular_functioninositol 1,4,5-trisphosphate-gated calcium channel activity
A0005262molecular_functioncalcium channel activity
A0005783cellular_componentendoplasmic reticulum
A0006816biological_processcalcium ion transport
A0016020cellular_componentmembrane
A0070588biological_processcalcium ion transmembrane transport
A0070679molecular_functioninositol 1,4,5 trisphosphate binding
Functional Information from PDB Data
site_idAC1
Number of Residues18
DetailsBINDING SITE FOR RESIDUE I3P A 1000
ChainResidue
AARG265
AHOH1126
AHOH1128
AHOH1139
AHOH1146
AHOH1148
AHOH1157
AHOH1193
AHOH1198
AHOH1222
ATHR267
AGLY268
AARG269
ALYS508
AARG511
ATYR567
AARG568
ALYS569

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues7
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"12442173","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"28416699","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1N4K","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5GUG","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"5XA1","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"12442173","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1N4K","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

239803

PDB entries from 2025-08-06

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