ID 1.14.12.16 DE 2-hydroxyquinoline 5,6-dioxygenase. AN 2-oxo-1,2-dihydroquinoline 5,6-dioxygenase. AN Quinolin-2(1H)-one 5,6-dioxygenase. AN Quinolin-2-ol 5,6-dioxygenase. CA Quinolin-2-ol + NADH + O(2) = 2,5,6-trihydroxy-5,6-dihydroquinoline + CA NAD(+). CC -!- 3-methylquinolin-2-ol, quinolin-8-ol and quinolin-2,8-diol are also CC substrates. CC -!- Quinolin-2-ols exist largely as their quinolin-2(1H)-one tautomers. //