Anti-TM4SF19 antibodies are used in the immunodetection of the protein transmembrane 4 L six family member 19. In humans, the canonical protein has a reported length of 209 amino acid residues and a mass of 22.4 kDa. Its subcellular localization is in the membrane. Up to 2 different isoforms have been reported for this protein. It is a member of the L6 tetraspanin protein family. Post-translational modifications have been described, including glycosylation. Synonyms for this target antigen include osteoclast maturation-associated gene 4 protein, tetraspan membrane protein OCTM4, and transmembrane 4 L6 family member 19. TM4SF19 gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species. Indicated applications for TM4SF19 antibodies listed below include Western Blot.