Anti-MMP21 antibodies are used in the immunodetection of the protein matrix metallopeptidase 21. In humans, the canonical protein has a reported length of 569 amino acid residues and a mass of 65 kDa. It has been described to be a secreted protein. A member of the Peptidase M10A protein family, MMP21 is known to play a specialized role in the generation of left-right asymmetry during embryogenesis. Post-translational modifications have been described, including protein cleavage and glycosylation. The MMP21 gene has been associated with the disease, Heterotaxy. Synonyms for this target antigen include matrix metalloproteinase-21 and matrix metalloproteinase 21. MMP21 gene orthologs have been reported in the mouse, rat, frog, zebrafish and chimpanzee species. Western Blot is a widely used application for the MMP21 antibodies listed below. In addition, ELISA is also a common application.