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Information on EC - homomethionine N-monooxygenase

for references in articles please use BRENDA:EC1.14.14.42
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IUBMB Comments
This plant cytochrome P-450 (heme thiolate) enzyme is involved in methionine-derived aliphatic glucosinolates biosynthesis. It catalyses two successive N-hydroxylations, which are followed by dehydration and decarboxylation. CYP79F1 from Arabidopsis thaliana can metabolize mono-, di-, tri-, tetra-, penta-, and hexahomomethionine to their corresponding aldoximes, while CYP79F2 from the same plant can only metabolize penta- and hexahomomethionine.
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The enzyme appears in viruses and cellular organisms
cyp79f1, cyp79f2, dihomomethionine n-hydroxylase, more
an L-N,N-dihydroxypolyhomomethionine = an (E)-omega-(methylsulfanyl)alkanal oxime + CO2 + H2O
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an L-N-hydroxypolyhomomethionine + [reduced NADPH-hemoprotein reductase] + O2 = an L-N,N-dihydroxypolyhomomethionine + [oxidized NADPH-hemoprotein reductase] + H2O
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an L-polyhomomethionine + 2 [reduced NADPH-hemoprotein reductase] + 2 O2 = an (E)-omega-(methylsulfanyl)alkanal oxime + 2 [oxidized NADPH-hemoprotein reductase] + CO2 + 3 H2O
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overall reaction
an L-polyhomomethionine + [reduced NADPH-hemoprotein reductase] + O2 = an L-N-hydroxypolyhomomethionine + [oxidized NADPH-hemoprotein reductase] + H2O
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