Predicted to enable P-type potassium transmembrane transporter activity and metal ion binding activity. Predicted to be involved in cellular monovalent inorganic cation homeostasis and inorganic cation transmembrane transport. Predicted to act upstream of or within pH reduction; regulation of proton transport; and response to xenobiotic stimulus. Located in apical plasma membrane. Orthologous to human ATP4A (ATPase H+/K+ transporting subunit alpha). [provided by Alliance of Genome Resources, Apr 2022]