Predicted to enable P-type proton-exporting transporter activity. Predicted to act upstream of or within proton transmembrane transport. Located in endosome. Is integral component of membrane. Is expressed in several structures, including genitourinary system; liver; nervous system; nose; and spleen. Orthologous to human ATP6V0B (ATPase H+ transporting V0 subunit b). [provided by Alliance of Genome Resources, Apr 2022]