Enables flavin adenine dinucleotide binding activity; primary amine oxidase activity; and serotonin binding activity. Involved in phenylethylamine metabolic process and serotonin metabolic process. Located in mitochondrial outer membrane. 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]