Anti-ENSA antibodies are used in the immunodetection of the protein endosulfine alpha. In humans, the canonical protein has a reported length of 121 amino acid residues and a mass of 13.4 kDa. Its subcellular localization is in the cytoplasm. Up to 9 different isoforms have been reported for this protein. It is reported to be widely expressed with high levels in skeletal muscle and brain and lower levels in the pancreas. A member of the Endosulfine protein family, ENSA is known to be involved with the cell cycle. Post-translational modifications have been described, including phosphorylation. Synonyms for this target antigen include ARPP-19e and alpha-endosulfine. ENSA gene orthologs have been reported in the mouse, rat, bovine, frog, chimpanzee and chicken species. A number of Ensa antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. In addition, ELISA is also a common application.