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3IPT

Crystal Structure of Ketosteroid Isomerase Y16S/D40N from Pseudomonas putida with Bound Equilenin

Functional Information from GO Data
ChainGOidnamespacecontents
A0004769molecular_functionsteroid Delta-isomerase activity
A0006629biological_processlipid metabolic process
A0008202biological_processsteroid metabolic process
A0016853molecular_functionisomerase activity
B0004769molecular_functionsteroid Delta-isomerase activity
B0006629biological_processlipid metabolic process
B0008202biological_processsteroid metabolic process
B0016853molecular_functionisomerase activity
C0004769molecular_functionsteroid Delta-isomerase activity
C0006629biological_processlipid metabolic process
C0008202biological_processsteroid metabolic process
C0016853molecular_functionisomerase activity
D0004769molecular_functionsteroid Delta-isomerase activity
D0006629biological_processlipid metabolic process
D0008202biological_processsteroid metabolic process
D0016853molecular_functionisomerase activity
Functional Information from PDB Data
site_idAC1
Number of Residues8
DetailsBINDING SITE FOR RESIDUE EQU A 1128
ChainResidue
AASN40
APHE86
AMET90
ALEU99
AASP103
AMET116
ATRP120
AHOH174

site_idAC2
Number of Residues7
DetailsBINDING SITE FOR RESIDUE EQU B 1128
ChainResidue
BPHE86
BMET90
BLEU99
BASP103
BMET116
BTRP120
BASN40

site_idAC3
Number of Residues8
DetailsBINDING SITE FOR RESIDUE EQU C 1128
ChainResidue
CASN40
CPHE56
CPHE86
CMET90
CLEU99
CASP103
CMET116
CTRP120

site_idAC4
Number of Residues5
DetailsBINDING SITE FOR RESIDUE EQU D 1128
ChainResidue
DASN40
DPHE86
DMET90
DASP103
DMET116

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues4
DetailsActive site: {"description":"Proton donor"}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues4
DetailsActive site: {"description":"Proton acceptor"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues4
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"11007792","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idMCSA1
Number of Residues4
DetailsM-CSA 349
ChainResidueDetails
ASER16proton acceptor, proton donor
AASN40proton acceptor, proton donor
AASP100electrostatic stabiliser
AASP103electrostatic stabiliser

site_idMCSA2
Number of Residues4
DetailsM-CSA 349
ChainResidueDetails
BSER16proton acceptor, proton donor
BASN40proton acceptor, proton donor
BASP100electrostatic stabiliser
BASP103electrostatic stabiliser

site_idMCSA3
Number of Residues4
DetailsM-CSA 349
ChainResidueDetails
CSER16proton acceptor, proton donor
CASN40proton acceptor, proton donor
CASP100electrostatic stabiliser
CASP103electrostatic stabiliser

site_idMCSA4
Number of Residues4
DetailsM-CSA 349
ChainResidueDetails
DSER16proton acceptor, proton donor
DASN40proton acceptor, proton donor
DASP100electrostatic stabiliser
DASP103electrostatic stabiliser

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PDB entries from 2025-12-10

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