Anti-PIN4 antibodies are used in the immunodetection of the protein peptidylprolyl cis/trans isomerase, NIMA-interacting 4. In humans, the canonical protein has a reported length of 131 amino acid residues and a mass of 13.8 kDa. Its subcellular localization is in the nucleus and cytoplasm. It is notably widely expressed in many tissue types. A member of the PpiC/parvulin rotamase protein family, PIN4 is known to be involved with rRNA processing. Post-translational modifications have been described, including sumoylation and phosphorylation. Synonyms for this target antigen include PAR14, PAR17, hEPVH, hPar14, hPar17, peptidyl-prolyl cis-trans isomerase NIMA-interacting 4, PPIase PIN4, and EPVH. PIN4 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some PIN4 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. ELISA and Immunohistochemistry are also common applications.