Predicted to enable acetylcholine-gated monoatomic cation-selective channel activity and transmembrane signaling receptor activity. Predicted to act upstream of or within monoatomic ion transmembrane transport. Predicted to be located in postsynaptic membrane. Human ortholog(s) of this gene implicated in autosomal dominant nocturnal frontal lobe epilepsy 1 and nicotine dependence. Orthologous to human CHRNA4 (cholinergic receptor nicotinic alpha 4 subunit).