Anti-ST7 antibodies are used in the immunodetection of the protein suppression of tumorigenicity 7. In humans, the canonical protein has a reported length of 585 amino acid residues and a mass of 67.2 kDa. Its subcellular localization is in the membrane. Up to 7 different isoforms have been reported for this protein. It is widely expressed across many tissue types. A member of the ST7 protein family, ST7 is believed to act as a tumor suppressor. Post-translational modifications have been described, including glycosylation. Synonyms for this target antigen include FAM4A, FAM4A1, HELG, RAY1, SEN4, TSG7, suppressor of tumorigenicity 7 protein, and ETS7q. ST7 gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species. Some ST7 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. In addition, ELISA is also a common application.