Anti-TDRD1 antibodies are used in the immunodetection of the protein tudor domain containing 1. In humans, the canonical protein has a reported length of 1180 amino acid residues and a mass of 132 kDa. Its subcellular localization is in the cytoplasm. Alternative splicing is reported to yield 4 different isoforms for this protein. A member of a the TDRD1 protein family, TDRD1 is known to play an important role during spermatogenesis by participating in the repression transposable elements and preventing their mobilization, which is essential for the germline integrity. Synonyms for this target antigen include cancer/testis antigen 41.1, testicular tissue protein Li 193, and tudor domain-containing protein 1.