Anti-TTC21A antibodies are used in the immunodetection of the protein tetratricopeptide repeat domain 21A. In humans, the canonical protein has a reported length of 1320 amino acid residues and a mass of 150.9 kDa. Up to 5 different isoforms have been reported for this protein. It is reported to be highly expressed in the testis. A member of the TTC21 protein family, TTC21A is known to be involved with spermatid development. The TTC21A gene has been associated with the disease, Spermatogenic failure. Synonyms for this target antigen include TPR domain containing STI2, TPR repeat protein 21A, stress-inducible protein 2, testicular tissue protein Li 212, and tetratricopeptide repeat protein 21A. TTC21A gene orthologs have been reported in the mouse, rat, bovine, frog and chimpanzee species. Indicated applications for TTC21A antibodies listed below include Western Blot, Immunocytochemistry, Immunofluorescence, and Immunohistochemistry.