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3NXJ

Crystal Structure of Ketosteroid Isomerase D99N from Pseudomonas Testosteroni (tKSI)

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
Functional Information from PDB Data
site_idAC1
Number of Residues5
DetailsBINDING SITE FOR RESIDUE SO4 A 126
ChainResidue
AHOH166
AHOH169
AHOH264
AHOH267
AHOH271

site_idAC2
Number of Residues4
DetailsBINDING SITE FOR RESIDUE SO4 A 127
ChainResidue
AVAL27
ATHR48
AARG52
AHOH246

site_idAC3
Number of Residues4
DetailsBINDING SITE FOR RESIDUE SO4 B 126
ChainResidue
BARG113
BHOH235
BHOH297
BHOH312

site_idAC4
Number of Residues7
DetailsBINDING SITE FOR RESIDUE SO4 B 127
ChainResidue
AARG113
BGLU77
BHIS100
BARG102
BARG113
BHOH153
BHOH238

site_idAC5
Number of Residues4
DetailsBINDING SITE FOR RESIDUE SO4 B 128
ChainResidue
BLYS108
BHOH285
BHOH296
BHOH303

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues2
DetailsActive site: {"description":"Proton donor"}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues2
DetailsActive site: {"description":"Proton acceptor","evidences":[{"source":"PubMed","id":"3480517","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues2
DetailsBinding site: {}
ChainResidueDetails

246031

PDB entries from 2025-12-10

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