Predicted to enable ATPase binding activity. Involved in several processes, including cholinergic synaptic transmission; positive regulation of neurotransmitter secretion; and response to stress. Part of vacuolar proton-transporting V-type ATPase complex. Expressed in several structures, including alimentary muscle; hermaphrodite gonad; neurons; somatic nervous system; and vulva. Human ortholog(s) of this gene implicated in several diseases, including autosomal recessive cutis laxa type IIA; autosomal recessive osteopetrosis 1; and developmental and epileptic encephalopathy 104. Is an ortholog of human ATP6V0A1 (ATPase H+ transporting V0 subunit
a1).