Reaction: L-kynurenine + NADPH + H+ + O2 = 3-hydroxy-L-kynurenine + NADP+ + H2O
For diagram of reaction click here.
Other name(s): kynurenine 3-hydroxylase; kynurenine hydroxylase; L-kynurenine-3-hydroxylase
Systematic name: L-kynurenine,NADPH:oxygen oxidoreductase (3-hydroxylating)
Comments: A flavoprotein (FAD). Formerly EC 18.104.22.168 and EC 22.214.171.124.
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 9029-61-2
1. de Castro, F.T., Price, J.M. and Brown, R.R. Reduced triphosphopyridinenucleotide requirement for the enzymatic formation of 3-hydroxykynurenine from L-kynurenine. J. Am. Chem. Soc. 78 (1956) 2904-2905.
2. Okamoto, H. and Hayaishi, O. Flavin adenine dinucleotide requirement for kynurenine hydroxylase of rat liver mitochondria. Biochem. Biophys. Res. Commun. 29 (1967) 394-399. [PMID: 6076241]
3. Saito, Y., Hayaishi, O. and Rothberg, S. Studies on oxygenases: enzymatic formation of 3-hydroxy-L-kynurenine from L-kynurenine. J. Biol. Chem. 229 (1957) 921-934.