Enables copper ion binding activity and dopamine beta-monooxygenase activity. Involved in several processes, including cellular biogenic amine metabolic process; cellular response to manganese ion; and cellular response to nicotine. Located in several cellular components, including axon; dendrite; and neuronal cell body. Biomarker of brain ischemia; hypertension; mental depression; and portal hypertension. Human ortholog(s) of this gene implicated in several diseases, including alcohol use disorder; attention deficit hyperactivity disorder; dopamine beta-hydroxylase deficiency; hypertension; and migraine with aura. Orthologous to human DBH (dopamine beta-hydroxylase). [provided by Alliance of Genome Resources, Apr 2022]