Predicted to enable potassium:proton antiporter activity and sodium:proton antiporter activity. Predicted to be involved in potassium ion transmembrane transport; regulation of intracellular pH; and sodium ion import across plasma membrane. Predicted to be located in endosome membrane. Predicted to be integral component of membrane. Predicted to be active in plasma membrane and recycling endosome. Human ortholog(s) of this gene implicated in autistic disorder. Orthologous to human SLC9A9 (solute carrier family 9 member A9). [provided by Alliance of Genome Resources, Apr 2022]