Anti-APEH antibodies are used in the immunodetection of the protein acylaminoacyl-peptide hydrolase. In humans, the canonical protein has a reported length of 732 amino acid residues and a mass of 81.2 kDa. Its subcellular localization is in the cytoplasm. It is reported to be expressed in erythrocytes. A member of the Peptidase S9C protein family, Apeh is known to catalyze the hydrolysis of the N-terminal peptide bond of an N-acetylated peptide to generate an N-acetylated amino acid and a peptide with a free N-terminus. Synonyms for this target antigen include ACPH, APH, D3F15S2, D3S48E, DNF15S2, OPH, acylamino-acid-releasing enzyme, and AARE. APEH gene orthologs have been reported in the mouse, rat, bovine, frog and chimpanzee species. Some Apeh antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. Immunofluorescence and Immunohistochemistry are also common applications.