Definition of "kynurenine" []

• A metabolite, 2-amino-4-(2-aminophenyl)- 4-oxo-butanoic acid, that is an intermediate in the conversion of tryptophan to niacin. (noun)

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• "It might be pointed out here that kynurenine has since been recognized to occupy a central position in tryptophan metabolism in many organisms aside from insects, including mammals and fungi."
• "[5] Specific activity (U/mg) 0.0026 (organism grown on the standard medium with kynurenine [11]) [11] 0.0032"
• "C.; Warren, W.D.; Rover, S.; Mal - herbe, P.: Cloning and functional expression of human kynurenine 3 - monooxygenase."