Enables primary amine oxidase activity. Acts upstream of or within dopamine catabolic process and positive regulation of signal transduction. Located in mitochondrion. Is expressed in several structures, including alimentary system; central nervous system; genitourinary system; peripheral nervous system ganglion; and sensory organ. Used to study Brunner Syndrome. Human ortholog(s) of this gene implicated in Alzheimer's disease; Brunner Syndrome; alcohol use disorder; autism spectrum disorder; and panic disorder. Orthologous to human MAOA (monoamine oxidase A). [provided by Alliance of Genome Resources, Apr 2022]