The Enzyme Database

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Accepted name: 4-methylaminobutanoate oxidase (formaldehyde-forming)
Reaction: 4-methylaminobutanoate + O2 + H2O = 4-aminobutanoate + formaldehyde + H2O2
For diagram of nicotine catabolism by arthrobacter, click here
Other name(s): mabO (gene name)
Systematic name: 4-methylaminobutanoate:oxygen oxidoreductase (formaldehyde-forming)
Comments: A flavoprotein (FAD). In the enzyme from the soil bacterium Arthrobacter nicotinovorans the cofactor is covalently bound. Participates in the nicotine degradation pathway of this organism.
Links to other databases: BRENDA, EAWAG-BBD, EXPASY, KEGG, MetaCyc
1.  Chiribau, C.B., Sandu, C., Fraaije, M., Schiltz, E. and Brandsch, R. A novel γ-N-methylaminobutyrate demethylating oxidase involved in catabolism of the tobacco alkaloid nicotine by Arthrobacter nicotinovorans pAO1. Eur. J. Biochem. 271 (2004) 4677–4684. [DOI] [PMID: 15606755]
[EC created 2012]

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