Anti-MAST4 antibodies are used in the immunodetection of the protein microtubule associated serine/threonine kinase family member 4. In humans, the canonical protein has a reported length of 2623 amino acid residues and a mass of 284.1 kDa. Its subcellular localization is in the cytoplasm. Up to 5 different isoforms have been reported for this protein. It is reported to be highly expressed in most normal human tissues, with an exception of in testis, small intestine, colon and peripheral blood leukocyte. A member of the AGC Ser/Thr protein kinase protein family, MAST4 is known to be involved with cytoskeleton organization and intracellular signal transduction. Synonyms for this target antigen include microtubule-associated serine/threonine-protein kinase 4. MAST4 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some MAST4 antibodies may have been used in research and have associated citations. Immunohistochemistry is a widely used application for these antibodies. ELISA, Western Blot, Immunocytochemistry, and Immunofluorescence are also common applications.