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4QCK

Crystal structure of 3-ketosteroid-9-alpha-hydroxylase (KshA) from M. tuberculosis in complex with 4-androstene-3,17-dione

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
3-ketosteroid-9-alpha-monooxygenase oxygenase subunitpolymer38644326.51UniProt (P71875)
Pfam (PF00355)
Pfam (PF19298)
Mycobacterium tuberculosis3-ketosteroid-9-alpha-hydroxylase oxygenase subunit, Rieske-type oxygenase, RO
2B
(A)
FE (III) IONnon-polymer55.81Chemie (FE)
3C
(A)
FE2/S2 (INORGANIC) CLUSTERnon-polymer175.81Chemie (FES)
4D
(A)
PHOSPHATE IONnon-polymer95.01Chemie (PO4)
5E
(A)
4-ANDROSTENE-3-17-DIONEnon-polymer286.41Chemie (ASD)
6F
(A)
waterwater18.0128Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight44326.5
Non-Polymers*Number of molecules4
Total formula weight613.0
All*Total formula weight44939.5
*Water molecules are not included.

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PDB entries from 2026-01-14

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