Enables ligand-gated channel activity. Involved in several processes, including cold acclimation; negative regulation of mitochondrial membrane potential; and response to amino acid. Located in distal axon and neuronal cell body. Part of cation channel complex and mitochondrial proton-transporting ATP synthase complex, coupling factor F(o). Orthologous to human ATP5MC1 (ATP synthase membrane subunit c locus 1). [provided by Alliance of Genome Resources, Apr 2022]