Anti-IQCN antibodies are used in the immunodetection of the protein IQ motif containing N. In humans, the canonical protein has a reported length of 1180 amino acid residues and a mass of 127.7 kDa. Up to 5 different isoforms have been reported for this protein. It is notably expressed in the cerebellum and testis. IQCN is known to be important for spermiogenesis and fertilization. The IQCN gene has been associated with the disease, Spermatogenic failure. Synonyms for this target antigen include IQ domain-containing protein N. IQCN gene orthologs have been reported in the mouse, rat, bovine and chimpanzee species. Some IQCN antibodies may have been used in research and have associated citations. Immunocytochemistry is a widely used application for these antibodies. Western Blot, Immunofluorescence, and Immunohistochemistry are also common applications.