Anti-TASOR antibodies are used in the immunodetection of the protein transcription activation suppressor. In humans, the canonical protein has a reported length of 1670 amino acid residues and a mass of 189 kDa. Its subcellular localization is in the nucleus. Up to 4 different isoforms have been reported for this protein. A member of the TASOR protein family, TASOR is a known component of the HUSH complex, a multiprotein complex that mediates epigenetic repression. Synonyms for this target antigen include FAM208A, RAP140, TASOR1, se89-1, protein TASOR, and C3orf63. TASOR gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species.