Contributes to heterocyclic compound binding activity. Predicted to be involved in several processes, including chemical synaptic transmission; regulation of membrane potential; and regulation of synaptic vesicle exocytosis. Predicted to act upstream of or within membrane depolarization and regulation of dopamine secretion. Located in membrane. Part of protein-containing complex. Is integral component of postsynaptic membrane and integral component of presynaptic membrane. Orthologous to human CHRNA6 (cholinergic receptor nicotinic alpha 6 subunit). [provided by Alliance of Genome Resources, Apr 2022]