The Enzyme Database

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Accepted name: pseudooxynicotine dehydrogenase
Reaction: pseudooxynicotine + H2O + 2 ferricytochrome c = 4-oxo-4-(pyridin-3-yl)butanal + methylamine + 2 ferrocytochrome c + 2 H+
Glossary: pseudooxynicotine = 4-(methylamino)-1-(pyridin-3-yl)butan-1-one
Other name(s): pnaO (gene name)
Systematic name: 4-(methylamino)-1-(pyridin-3-yl)butan-1-one:c-type cytochrome oxidoreductase (methylamine releasing)
Comments: Contains one non-covalently bound FAD molecule per dimer. This enzyme, characterized from the soil bacteria Pseudomonas sp. HZN6 and Pseudomonas putida S16, is involved in nicotine degradation.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Qiu, J., Ma, Y., Wen, Y., Chen, L., Wu, L. and Liu, W. Functional identification of two novel genes from Pseudomonas sp. strain HZN6 involved in the catabolism of nicotine. Appl. Environ. Microbiol. 78 (2012) 2154–2160. [DOI] [PMID: 22267672]
2.  Choudhary, V., Wu, K., Zhang, Z., Dulchavsky, M., Barkman, T., Bardwell, J.CA. and Stull, F. The enzyme pseudooxynicotine amine oxidase from Pseudomonas putida S16 is not an oxidase, but a dehydrogenase. J. Biol. Chem. 298:102251 (2022). [DOI] [PMID: 35835223]
[EC created 2012 as EC, transferred 2022 to EC]

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