Loading
PDBj
MenuPDBj@FacebookPDBj@X(formerly Twitter)PDBj@BlueSkyPDBj@YouTubewwPDB FoundationwwPDBDonate
RCSB PDBPDBeBMRBAdv. SearchSearch help

1EJ3

CRYSTAL STRUCTURE OF AEQUORIN

Functional Information from GO Data
ChainGOidnamespacecontents
A0005509molecular_functioncalcium ion binding
A0008218biological_processbioluminescence
A0046872molecular_functionmetal ion binding
B0005509molecular_functioncalcium ion binding
B0008218biological_processbioluminescence
B0046872molecular_functionmetal ion binding
Functional Information from PDB Data
site_idAC1
Number of Residues17
DetailsBINDING SITE FOR RESIDUE CZH A 201
ChainResidue
AHIS16
APHE113
ATRP129
ATYR132
AMET165
AHIS169
ATRP173
ATYR184
AHOH405
AMET19
AMET36
AALA40
ATYR82
ATRP86
ATRP108
AGLY109
ALEU112

site_idAC2
Number of Residues17
DetailsBINDING SITE FOR RESIDUE CZH B 301
ChainResidue
BHIS16
BMET19
BMET36
BPHE66
BTYR82
BTRP86
BTRP108
BGLY109
BLEU112
BPHE113
BTRP129
BTYR132
BMET165
BHIS169
BTRP173
BTYR184
BHOH451

Functional Information from PROSITE/UniProt
site_idPS00018
Number of Residues13
DetailsEF_HAND_1 EF-hand calcium-binding domain. DVNHNGKISldEM
ChainResidueDetails
AASP24-MET36
AASP117-TRP129
AASP153-MET165

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues70
DetailsDomain: {"description":"EF-hand 1","evidences":[{"source":"PROSITE-ProRule","id":"PRU00448","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues108
DetailsDomain: {"description":"EF-hand 2","evidences":[{"source":"PubMed","id":"10830969","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues58
DetailsDomain: {"description":"EF-hand 3","evidences":[{"source":"PROSITE-ProRule","id":"PRU00448","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues70
DetailsDomain: {"description":"EF-hand 4","evidences":[{"source":"PROSITE-ProRule","id":"PRU00448","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues60
DetailsRegion: {"description":"May interact with the chromophore"}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues28
DetailsBinding site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU00448","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues2
DetailsSite: {"description":"Required for bioluminescence"}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues5
DetailsAnnotated By Reference To The Literature 1qv0
ChainResidueDetails
AHIS169
ATRP86
AHIS16
ATYR184
ATYR132

site_idCSA2
Number of Residues5
DetailsAnnotated By Reference To The Literature 1qv0
ChainResidueDetails
BHIS169
BTRP86
BHIS16
BTYR184
BTYR132

240971

PDB entries from 2025-08-27

PDB statisticsPDBj update infoContact PDBjnumon