Anti-ATP6V1B1 antibodies are used in the immunodetection of the protein ATPase H+ transporting V1 subunit B1. In humans, the canonical protein has a reported length of 513 amino acid residues and a mass of 56.8 kDa. Its subcellular localization is in the cell membrane. It is notably expressed in many tissues, such as the bronchus, testis, and breast. A member of the ATPase alpha/beta chains protein family, ATP6V1B1 is reported to be a non-catalytic subunit of the V1 complex of vacuolar(H+)-ATPase (V-ATPase), a multisubunit enzyme composed of a peripheral complex (V1) that hydrolyzes ATP and a membrane integral complex (V0) that translocates protons. Synonyms for this target antigen include DRTA2, RTA1B, VATB, VMA2, VPP3, and ATP6B1. ATP6V1B1 gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species. A number of ATP6V1B1 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. ELISA, Flow Cytometry, Immunofluorescence, and Immunohistochemistry are also common applications.