Enables several functions, including dopamine binding activity; dopamine:sodium symporter activity; and protein N-terminus binding activity. Involved in dopamine uptake; hyaloid vascular plexus regression; and neurotransmitter uptake. Acts upstream of or within several processes, including dopamine metabolic process; gland development; and prepulse inhibition. Located in axon and cell surface. Is expressed in genitourinary system; nervous system; spleen; and submandibular gland. Used to study Gilles de la Tourette syndrome; attention deficit hyperactivity disorder; and schizophrenia. Human ortholog(s) of this gene implicated in attention deficit hyperactivity disorder; nicotine dependence; and obesity. Orthologous to human SLC6A3 (solute carrier family 6 member 3). [provided by Alliance of Genome Resources, Apr 2022]