Predicted to enable potassium:proton antiporter activity and sodium:proton antiporter activity. Acts upstream of or within several processes, including brain-derived neurotrophic factor receptor signaling pathway; dendritic spine development; and regulation of neurotrophin TRK receptor signaling pathway. Located in several cellular components, including axon; dendrite; and endosome. Is expressed in several structures, including central nervous system; eye; genitourinary system; gut; and immune system. Used to study Christianson syndrome. Human ortholog(s) of this gene implicated in Christianson syndrome. Orthologous to human SLC9A6 (solute carrier family 9 member A6). [provided by Alliance of Genome Resources, Apr 2022]