Accepted name: 2-hydroxyquinoline 5,6-dioxygenase
Reaction: quinolin-2-ol + NADH + H+ + O2 = 2,5,6-trihydroxy-5,6-dihydroquinoline + NAD+
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
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]