Copper amine oxidase involved in the metabolism of xenobiotic and biogenic amines. Capable of catalyzing the oxidative deamination of primary amines such as ethylamine as alternate sources of nitrogen to support growth. an aliphatic amine + H2O + O2 = an aldehyde + H2O2 + NH4(+) Binds 1 copper ion per subunit (By similarity). Can also use zinc ion as cofactor (By similarity). Contains 1 topaquinone per subunit. Binds 1 Mn(2+) ion per subunit. Homodimer. Topaquinone (TPQ) is generated by copper-dependent autoxidation of a specific tyrosyl residue. Belongs to the copper/topaquinone oxidase family.