IUBMB Enzyme Nomenclature


Accepted name: 2-hydroxyquinoline 5,6-dioxygenase

Reaction: quinolin-2-ol + NADH + H+ + O2 = 2,5,6-trihydroxy-5,6-dihydroquinoline + NAD+

For diagram click here.

Other name(s): 2-oxo-1,2-dihydroquinoline 5,6-dioxygenase; quinolin-2-ol 5,6-dioxygenase; quinolin-2(1H)-one 5,6-dioxygenase

Systematic name: quinolin-2-ol,NADH:oxygen oxidoreductase (5,6-hydroxylating)

Comments: 3-methylquinolin-2-ol, quinolin-8-ol and quinolin-2,8-diol are also substrates. Quinolin-2-ols exist largely as their quinolin-2(1H)-one tautomers

Links to other databases: BRENDA, EAWAG-BBD, EXPASY, KEGG, Metacyc, CAS registry number: 172399-50-7


1. Schach, S.B., Tshisuaka, B., Fetzner, S. and Lingens, F. Quinoline 2-oxidoreductase and 2-oxo-1,2-dihydroquinoline 5,6-dioxygenase from Comamonas testosteroni 63. The first two enzymes in quinoline and 3-methylquinoline degradation. Eur. J. Biochem. 232 (1995) 536-544. [PMID: 7556204]

[EC created 1999]

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