Anti-ATP6A antibodies enable researchers to detect and measure the ATP6A antigen in biological samples. This target is a reported synonym of the ATP4A gene, which encodes ATPase H+/K+ transporting subunit alpha. This protein is known to function in the response to xenobiotic compounds, among other biological roles. The human version of ATP6A has a canonical amino acid length of 1035 residues and a protein mass of 114.1 kilodaltons. It is reported to be localized in the cell membrane of cells and notably expressed in the stomach and testis. ATP6A is a member of the Cation transport ATPase (P-type) (TC 3.A.3) protein family.