Predicted to be involved in several processes, including positive regulation of protein localization; regulation of intracellular pH; and vacuolar proton-transporting V-type ATPase complex assembly. Predicted to be located in Golgi apparatus and early endosome. Predicted to be active in membrane. Orthologous to human TM9SF4 (transmembrane 9 superfamily member 4). [provided by Alliance of Genome Resources, Apr 2022]