Predicted to enable bile acid:sodium symporter activity. Involved in regulation of neurotransmitter loading into synaptic vesicle. Acts upstream of or within adult behavior and response to xenobiotic stimulus. Located in cholinergic synapse and serotonergic synapse. Is integral component of synaptic vesicle membrane. Is active in dopaminergic synapse. Is expressed in genitourinary system and nervous system. Orthologous to human SLC10A4 (solute carrier family 10 member 4). [provided by Alliance of Genome Resources, Apr 2022]