EC 3.7.1

Kynureninase or L-Kynurenine hydrolase (KYNU) () is a pyridoxal-phosphate dependent enzyme that catalyses the cleavage of kynurenine into anthranilic acid. It can also act on 3-hydroxykynurenine (to produce 3-hydroxyanthranilate) and some other (3-arylcarbonyl)-alanines. Humans express one kynureninase enzyme that is encoded by the KYNU gene located on chromosome 2.

mammalian protein found in Homo sapiens

In enzymology, an oxaloacetase () is an enzyme that catalyzes the chemical reaction: