Reaction: (1) 2-methylpropan-1-amine + FADH2 + O2 = N-(2-methylpropyl)hydroxylamine + FAD + H2O
(2) 2-methylpropan-1-amine + FMNH2 + O2 = N-(2-methylpropyl)hydroxylamine + FMN + H2O
Glossary: 2-methylpropan-1-amine = isobutylamine
N-(2-methylpropyl)hydroxylamine = N-hydroxy-2-methylpropan-1-amine = isobutylhydroxylamine
Other name(s): vlmH (gene name)
Systematic name: 2-methylpropan-1-amine,FADH2:O2 N-oxidoreductase
Comments: The enzyme, characterized from the bacterium Streptomyces viridifaciens, is part of a two component system that also includes a flavin reductase, which provides reduced flavin mononucleotide for this enzyme. The enzyme, which is involved in the biosynthesis of the azoxy antibiotic valanimycin, has a similar activity with either FMNH2 or FADH2. It exhibits broad specificity, and also accepts propan-1-amine, butan-1-amine, butan-2-amine and benzylamine.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number:
References:
1. Parry, R.J. and Li, W. Purification and characterization of isobutylamine N-hydroxylase from the valanimycin producer Streptomyces viridifaciens MG456-hF10. Arch. Biochem. Biophys. 339 (1997) 47-54. [PMID: 9056232]
2. Parry, R.J., Li, W. and Cooper, H.N. Cloning, analysis, and overexpression of the gene encoding isobutylamine N-hydroxylase from the valanimycin producer, Streptomyces viridifaciens. J. Bacteriol. 179 (1997) 409-416. [PMID: 8990292]
3. Parry, R.J. and Li, W. An NADPH:FAD oxidoreductase from the valanimycin producer, Streptomyces viridifaciens. Cloning, analysis, and overexpression. J. Biol. Chem. 272 (1997) 23303-23311. [PMID: 9287340]