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EC 1.14.18.12 Details
show Brenda entryEC number
1.14.18.12
Accepted name
2-hydroxy fatty acid dioxygenase
Reaction
a (2R)-2-hydroxy Cn-fatty acid + O2 = a Cn-1-fatty acid + H2O + CO2
Other name(s)
MPO1 (gene name)
Systematic name
2-hydroxyfatty acid:oxygen oxidoreductase (CO2,H2O-forming)
Comment
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-hydroxyfatty acids, but not against C8 2-hydroxyfatty acid.
History
created 2020
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1 Oxidoreductases
1.1 Acting on the CH-OH group of donors
1.14.99.5 created 1972, modified 1986, modified 2000, deleted 2000 1.14.99.6 created 1972, modified 2000, deleted 2000 1.14.99.8 created 1972, deleted 1984 1.14.99.13 created 1972, deleted 1984 1.14.99.16 created 1972, deleted 2002 1.14.99.17 created 1972, deleted 1976 1.14.99.18 created 1976, modified 1999, deleted 2003 1.14.99.25 created 1986, deleted 2000
