Anti-MEF2B antibodies are used in the immunodetection of the protein myocyte enhancer factor 2B. In humans, the canonical protein has a reported length of 365 amino acid residues and a mass of 38.6 kDa. Its subcellular localization is in the nucleus. Up to 2 different isoforms have been reported for this protein. It is reported to be expressed in skeletal and cardiac muscle and brain. A member of the MEF2 protein family, MEF2B is reported to be a transcriptional activator, which binds specifically to the MEF2 element, 5'-YTA[AT](4)TAR-3', found in numerous muscle-specific genes. Synonyms for this target antigen include MADS box transcription enhancer factor 2, polypeptide B (myocyte enhancer factor 2B), serum response factor-like protein 2, and myocyte-specific enhancer factor 2B. MEF2B gene orthologs have been reported in the mouse, bovine, zebrafish and chicken species. A number of MEF2B antibodies have been mentioned in research publications and have associated citations. These antibodies are most commonly used in Western Blot experiments, among other applications.