Enables kynurenine 3-monooxygenase activity. Involved in several processes, including carboxylic acid metabolic process; cellular response to interleukin-1; and positive regulation of glutamate secretion, neurotransmission. Located in extracellular space and mitochondrial outer membrane. Used to study schizophrenia. Biomarker of mental depression. Orthologous to human KMO (kynurenine 3-monooxygenase). [provided by Alliance of Genome Resources, Apr 2022]