Predicted to enable ATP binding activity and proton-transporting ATPase activity, rotational mechanism. Predicted to be involved in ATP metabolic process and proton transmembrane transport. Predicted to be part of proton-transporting V-type ATPase, V1 domain. Is an ortholog of C. elegans vha-12. In C. elegans, vha-12 is involved in several processes, including positive regulation of apoptotic process involved in development; positive regulation of neurotransmitter secretion; and regulation of intracellular pH.