Anti-Tropomyosin 4 antibodies are used for the immunodetection of the protein encoded by the TPM4 gene. In humans, the canonical protein has a reported length of 248 amino acid residues and a mass of 28.5 kDa. Its subcellular localization is in the cytoplasm. Alternative splicing is reported to yield 2 different isoforms for this protein. It is notably expressed in cardiac tissue and platelets, the form found in cardiac tissue is a higher molecular weight than the form found in platelets. A member of the Tropomyosin protein family, it is known to bind to actin filaments in muscle and non-muscle cells. Other names for this target antigen include tropomyosin alpha-4 chain, TM30p1, epididymis secretory protein Li 108, and HEL-S-108. Gene orthologs have been identified in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. A number of Tropomyosin 4 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. ELISA and Immunohistochemistry are also common applications.