Predicted to enable proton-transporting ATPase activity, rotational mechanism. Predicted to be involved in proton transmembrane transport. Predicted to be part of proton-transporting V-type ATPase, V0 domain. Is an ortholog of C. elegans vha-17. In C. elegans, vha-17 is involved in embryo development; embryonic body morphogenesis; and regulation of syncytium formation by plasma membrane fusion.