Anti-TTLL4 antibodies are used in the immunodetection of the protein tubulin tyrosine ligase like 4. In humans, the canonical protein has a reported length of 1199 amino acid residues and a mass of 133.4 kDa. Its subcellular localization is in the cytoplasm. It is notably expressed in many tissues, such as the bronchus, tonsil, and bone marrow. A member of the Tubulin--tyrosine ligase protein family, TTLL4 is known to be involved with cytoskeleton organization. Synonyms for this target antigen include protein monoglutamylase TTLL4, tubulin polyglutamylase TTLL4, tubulin tyrosine ligase-like family, member 4, tubulin--tyrosine ligase-like protein 4, and tubulin monoglutamylase TTLL4. TTLL4 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some TTLL4 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.