Anti-STPG1 antibodies are used in the immunodetection of the protein sperm tail PG-rich repeat containing 1. In humans, the canonical protein has a reported length of 334 amino acid residues and a mass of 36.8 kDa. Its subcellular localization is in the nucleus and cytoplasm. Up to 3 different isoforms have been reported for this protein. A member of the STPG1 protein family, STPG1 is believed to positively contribute to the induction of apoptosis triggered by O(6)-methylguanine. Synonyms for this target antigen include O6-methylguanine-induced apoptosis 2, UPF0490 protein C1orf201, sperm-tail PG-rich repeat-containing protein 1, and O(6)-methylguanine-induced apoptosis 2. STPG1 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish and chimpanzee species. Western Blot is a widely used application for the STPG1 antibodies listed below. In addition, Immunofluorescence is also a common application.