Anti-TEPSIN antibodies are used in the immunodetection of the protein TEPSIN adaptor related protein complex 4 accessory protein. In humans, the canonical protein has a reported length of 525 amino acid residues and a mass of 55.1 kDa. Its subcellular localization is in the membrane, cytoplasmic vesicles, Golgi, and cytoplasm. Up to 2 different isoforms have been reported for this protein. TEPSIN is reported to associate with the adapter-like complex 4 (AP-4) and may therefore play a role in vesicular trafficking of proteins at the trans-Golgi network. Synonyms for this target antigen include AP-4 accessory protein, ENTH domain containing 2, ENTH domain-containing protein 2, epsin for AP-4, tetra-epsin, and AP-4 complex accessory subunit tepsin. TEPSIN gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. These TEPSIN antibodies are widely used in Western Blot experiments, among other applications.