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ENZYME entry: EC 1.14.14.43

Accepted Name
(Methylsulfanyl)alkanaldoxime N-monooxygenase.
Alternative Name(s)
(Methylthio)alkanaldoxime N-monooxygenase.
CYP83A1.
Reaction catalysed
An (E)-omega-(methylthio)alkanal oxime + O(2) + glutathione + [reduced NADPH--hemoprotein reductase] <=> an (E)-1-(glutathione-S-yl)-omega-(methylthio)-alkylhydroximate + 2 H(2)O + [oxidized NADPH--hemoprotein reductase]
Cofactor(s)
Heme-thiolate.
Comment(s)
  • Involved in the biosynthesis of glucosinolates in plants.
  • Catalyzes an N-hydroxylation of the E isomer of n-(methylsulfanyl)aldoximes, forming an aci-nitro intermediate that reacts non-enzymically with glutathione to produce an N-alkyl- thiohydroximate adduct, the committed precursor of glucosinolates.
  • In the absence of a thiol compound, the enzyme is suicidal, probably due to interaction of the reactive aci-nitro intermediate with active site residues.
Cross-references
BRENDA1.14.14.43
EC2PDB1.14.14.43
ExplorEnz1.14.14.43
PRIAM enzyme-specific profiles1.14.14.43
KEGG Ligand Database for Enzyme Nomenclature1.14.14.43
IUBMB Enzyme Nomenclature1.14.14.43
IntEnz1.14.14.43
MEDLINEFind literature relating to 1.14.14.43
MetaCyc1.14.14.43
UniProtKB/Swiss-Prot
P48421, C83A1_ARATH

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