Accepted name: protodeoxyviolaceinate monooxygenase
Reaction: protodeoxyviolaceinate + NAD(P)H + O2 = protoviolaceinate + NAD(P)+ + H2O
Glossary: protodeoxyviolaceinate = 3,5-di(1H-indol-3-yl)-1H-pyrrole-2-carboxylate
protoviolaceinate = 5-(5-hydroxy-1H-indol-3-yl)-3-(1H-indol-3-yl)-1H-pyrrole-2-carboxylate
Other name(s): vioD (gene name); protoviolaceinate synthase
Systematic name: protodeoxyviolaceinate,NAD(P)H:O2 oxidoreductase
Comments: The enzyme, characterized from the bacterium Chromobacterium violaceum, participates in the biosynthesis of the violet pigment violacein. The product, protoviolaceinate, can be acted upon by EC, violacein synthase, leading to violacein production. However, it is very labile, and in the presence of oxygen can undergo non-enzymic autooxidation to the shunt product proviolacein.
1.  Balibar, C.J. and Walsh, C.T. In vitro biosynthesis of violacein from L-tryptophan by the enzymes VioA-E from Chromobacterium violaceum. Biochemistry 45 (2006) 15444–15457. [PMID: 17176066]
2.  Shinoda, K., Hasegawa, T., Sato, H., Shinozaki, M., Kuramoto, H., Takamiya, Y., Sato, T., Nikaidou, N., Watanabe, T. and Hoshino, T. Biosynthesis of violacein: a genuine intermediate, protoviolaceinic acid, produced by VioABDE, and insight into VioC function. Chem. Commun. (Camb.) (2007) 4140–4142. [PMID: 17925955]
[EC created 2016, modified 2016]

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