Anti-ARPP19 antibodies are used in the immunodetection of the protein cAMP regulated phosphoprotein 19. In humans, the canonical protein has a reported length of 112 amino acid residues and a mass of 12.3 kDa. Its subcellular localization is in the cytoplasm. Up to 2 different isoforms have been reported for this protein. It is notably expressed in the placenta, pancreas, cerebral cortex, and adrenal gland. A member of the Endosulfine protein family, ARPP19 is known to be involved with the cell cycle. Post-translational modifications have been described, including phosphorylation. Synonyms for this target antigen include ARPP16, ENSAL, cAMP-regulated phosphoprotein 19kDa, cyclic AMP phosphoprotein, 19 kD, and ARPP-16. ARPP19 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. A number of ARPP19 antibodies have been mentioned in research publications and have associated citations. ELISA and Western Blot are common applications for these antibodies.