6 Hydroxy 3 succinoylpyridine 3 monooxygenase

6-hydroxy-3-succinoylpyridine 3-monooxygenase (EC 1.14.13.163, 6-hydroxy-3-succinoylpyridine hydroxylase, hspA (gene), hspB (gene)) is an enzyme with systematic name 4-(6-hydroxypyridin-3-yl)-4-oxobutanoate,NADH:oxygen oxidoreductase (3-hydroxylating, succinate semialdehyde releasing). This enzyme catalyses the following chemical reaction

4-(6-hydroxypyridin-3-yl)-4-oxobutanoate + 2 NADH + 2 H⁺ + O₂ ⇌ 2,5-dihydroxypyridine + succinate semialdehyde + 2 NAD⁺ + H₂O

6-hydroxy-3-succinoylpyridine 3-monooxygenase catalyses a reaction in the nicotine degradation pathway of Pseudomonas species.