Anti-ACTL9 antibodies are used in the immunodetection of the protein actin like 9. In humans, the canonical protein has a reported length of 416 amino acid residues and a mass of 45.5 kDa. Its subcellular localization is in the cytoplasmic vesicles and cytoplasm. It is reported to have testis-specific expression. A member of the Actin protein family, ACTL9 is reported to be a testis-specic protein that plays an important role in fusion of proacrosomal vesicles and perinuclear theca formation. The ACTL9 gene has been associated with the disease, Spermatogenic failure. Synonyms for this target antigen include testicular tissue protein Li 15, testicular tissue protein Li 9, and actin-like protein 9. ACTL9 gene orthologs have been reported in the mouse, rat, bovine and chimpanzee species. Some ACTL9 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. In addition, ELISA is also a common application.