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ENZYME entry: EC

Accepted Name
2-hydroxy fatty acid dioxygenase
Reaction catalysed
a (2R)-2-hydroxy Cn-fatty acid + O2 <=> a Cn-1-fatty acid + H2O + CO2
  • Requires Fe(II).
  • The enzyme, characterized from yeast, is involved in phytosphingosine metabolism.
  • The reaction is mediated by iron(IV) peroxide and results in the release of a water molecule and a carbon dioxide molecule, shortening the substrate by a single carbon atom and forming an odd-numbered fatty acid.
  • Both oxygen atoms of the original carboxylate group are released - one as the leaving water molecule, the other as one of the oxygens of the carbon dioxide molecule.
  • The two oxygen atoms in the newly-formed carboxylate originate from the 2-hydroxy group and from molecular oxygen, respectively.
  • The other oxygen atom of the molecular oxygen is incorporated into the leaving CO2 molecule.
  • The enzyme from the yeast Saccharomyces cerevisiae is active at least toward C14 to C26 2-hydroxy fatty acids, but not against C8 2-hydroxy fatty acid.
PRIAM enzyme-specific profiles1.14.18.12
KEGG Ligand Database for Enzyme Nomenclature1.14.18.12
IUBMB Enzyme Nomenclature1.14.18.12
MEDLINEFind literature relating to
Rhea expert-curated reactions1.14.18.12
O13737, MPO1_SCHPOP25338, MPO1_YEAST

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