IUBMB Enzyme Nomenclature


Accepted name: 6-hydroxypseudooxynicotine dehydrogenase

Reaction: 1-(6-hydroxypyridin-3-yl)-4-(methylamino)butan-1-one + acceptor + H2O = 1-(2,6-dihydroxypyridin-3-yl)-4-(methylamino)butan-1-one + reduced acceptor

For diagram of reaction click here.

Glossary: 1-(6-hydroxypyridin-3-yl)-4-(methylamino)butan-1-one = 6-hydroxypseudooxynicotine
1-(2,6-dihydroxypyridin-3-yl)-4-(methylamino)butan-1-one = 2,6-dihydroxypseudooxynicotine

Systematic name: 1-(6-hydroxypyridin-3-yl)-4-(methylamino)butan-1-one:acceptor 6-oxidoreductase (hydroxylating)

Comments: Contains a cytidylyl molybdenum cofactor [3]. The enzyme, which participates in the nicotine degradation pathway, has been characterized from the soil bacterium Arthrobacter nicotinovorans [1,2].

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, UM-BBD, CAS registry number:


1. Freudenberg, W., Konig, K. and Andreesen, J. R. Nicotine dehydrogenase from Arthrobacter oxidans: A molybdenum-containing hydroxylase. FEMS Microbiology Letters 52 (1988) 13-18.

2. Grether-Beck, S., Igloi, G.L., Pust, S., Schilz, E., Decker, K. and Brandsch, R. Structural analysis and molybdenum-dependent expression of the pAO1-encoded nicotine dehydrogenase genes of Arthrobacter nicotinovorans. Mol. Microbiol. 13 (1994) 929-936. [PMID: 7815950]

3. Sachelaru, P., Schiltz, E. and Brandsch, R. A functional mobA gene for molybdopterin cytosine dinucleotide cofactor biosynthesis is required for activity and holoenzyme assembly of the heterotrimeric nicotine dehydrogenases of Arthrobacter nicotinovorans. Appl. Environ. Microbiol. 72 (2006) 5126-5131. [PMID: 16820521]

[EC created 2012]

Return to EC 1.5.99 home page
Return to EC 1.5 home page
Return to EC 1 home page
Return to Enzymes home page
Return to IUBMB Biochemical Nomenclature home page