KYNU polyclonal antibody

Kynureninase, also known as L-kynurenine hydrolase, is a 465 amino acid cytoplasmic enzyme. Kynureninase is involved in two pathways; the degredation of L-kynurenine and the biosynthesis of the cofactor NAD(+). The main function of kynureninase is to catalyze the cleavage of L-kynurenine into anthranilic acid and of L-3-hydroxykynurenine into 3-hydroxyanthranilic acid, exhibiting a preference for the L-3-hydroxy form. Kynureninase forms a homodimer, uses pyridoxal phosphate as a cofactor and is inhibited by o-methoxybenzoylalanine (OMBA). Kynureninase is widely expressed, with highest levels found in lung, placenta and liver. Deficiency in kynureninase leads to hyperkynureninuria, a disorder characterized by the inability to break down tryptophan to nicotinic acid (vitamin B6). Increased levels of kynureninase activity are observed in systemic and cerebral inflammatory conditions.