Anti-MLN antibodies are used in the immunodetection of the protein motilin. In humans, the canonical protein has a reported length of 115 amino acid residues and a mass of 12.9 kDa. It has been described to be a secreted protein. Up to 3 different isoforms have been reported for this protein. It is notably expressed in the duodenum and small intestine. A member of the Motilin protein family, MLN is known to play an important role in the regulation of interdigestive gastrointestinal motility and indirectly causes rhythmic contraction of duodenal and colonic smooth muscle. Synonyms for this target antigen include promotilin and prepromotilin. MLN gene orthologs have been reported in the rat, bovine, chimpanzee and chicken species. Some MLN antibodies may have been used in research and have associated citations. ELISA, Western Blot, Immunofluorescence, and Immunohistochemistry are common applications for these antibodies.