ENZYME entry: EC 1.14.13.141

Accepted Name
Cholest-4-en-3-one 26-monooxygenase.
Alternative Name(s)
Cholest-4-en-3-one 27-monooxygenase.
CYP125.
CYP125A1.
Reaction catalysed
Cholest-4-en-3-one + NADH + O(2) <=> 26-hydroxycholest-4-en-3-one + NAD(+) + H(2)O
Cofactor(s)
Heme-thiolate.
Comment(s)
  • This enzyme, found in several bacterial pathogens, is involved in degradation of the host cholesterol.
  • It catalyzes the hydroxylation of the C26 carbon, followed by oxidation of the alcohol to the carboxylic acid via the aldehyde intermediate.
  • These activities are required to initiate the degradation of the alkyl side-chain of cholesterol.
  • The enzyme also accepts cholesterol as a substrate, but unlike EC 1.14.15.15, this enzyme is specific for C26 and prefers cholest-4- en-3-one.
Cross-references
BRENDA1.14.13.141
EC2PDB1.14.13.141
ExplorEnz1.14.13.141
PRIAM enzyme-specific profiles1.14.13.141
KEGG Ligand Database for Enzyme Nomenclature1.14.13.141
IUBMB Enzyme Nomenclature1.14.13.141
IntEnz1.14.13.141
MEDLINEFind literature relating to 1.14.13.141
MetaCyc1.14.13.141
UniProtKB/Swiss-Prot
P63710, CP125_MYCBO;  P9WPP0, CP125_MYCTO;  P9WPP1, CP125_MYCTU;  
Q0S7M1, CP125_RHOJR;  

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