Anti-MSTP042 antibodies enable researchers to detect and measure the MSTP042 antigen in biological samples. This target is a reported synonym of the ATP6V1H gene, which encodes ATPase H+ transporting V1 subunit H. This protein is known to function in endocytosis and autophagy pathways, among other biological roles. The human version of MSTP042 has a canonical amino acid length of 483 residues and a protein mass of 55.9 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the cytoplasmic vesicles and membrane of cells and widely expressed in many tissue types. Other names for this target antigen include CGI-11 and NBP1.