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3MHE

Crystal Structure of Ketosteroid Isomerase P39A 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 Residues2
DetailsBINDING SITE FOR RESIDUE SO4 A 126
ChainResidue
AHIS6
AARG13

site_idAC2
Number of Residues8
DetailsBINDING SITE FOR RESIDUE SO4 A 127
ChainResidue
BHOH134
AASN104
AGLY105
AHOH140
AHOH206
AHOH209
BALA75
BASN76

site_idAC3
Number of Residues5
DetailsBINDING SITE FOR RESIDUE SO4 A 128
ChainResidue
AMET1
AHIS100
AARG102
AARG113
BARG102

site_idAC4
Number of Residues5
DetailsBINDING SITE FOR RESIDUE POL A 129
ChainResidue
AALA56
AHOH195
BLEU67
BGLN69
BGLU70

site_idAC5
Number of Residues7
DetailsBINDING SITE FOR RESIDUE SO4 B 126
ChainResidue
AALA31
AASP32
ALYS108
AHOH151
BASN104
BGLY105
BHOH149

site_idAC6
Number of Residues5
DetailsBINDING SITE FOR RESIDUE SO4 B 127
ChainResidue
BHIS6
BARG13
BGLN89
BGLY90
BARG91

site_idAC7
Number of Residues5
DetailsBINDING SITE FOR RESIDUE SO4 B 128
ChainResidue
BGLU5
BHIS122
BALA123
BGLY124
BHOH138

site_idAC8
Number of Residues5
DetailsBINDING SITE FOR RESIDUE SO4 B 129
ChainResidue
AHOH180
BHIS100
BARG102
BARG113
BHOH132

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

246704

PDB entries from 2025-12-24

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