Anti-KPNA4 antibodies are used in the immunodetection of the protein karyopherin subunit alpha 4. In humans, the canonical protein has a reported length of 521 amino acid residues and a mass of 57.9 kDa. Its subcellular localization is in the nucleus and cytoplasm. It is reported to be highly expressed in the testis, ovary, small intestine, heart, skeletal muscle, lung and pancreas, but barely detectable in the kidney, thymus, colon and peripheral blood leukocytes. A member of the Importin alpha protein family, KPNA4 is reported to function in nuclear protein import as an adapter protein for nuclear receptor KPNB1. Synonyms for this target antigen include QIP1, SRP3, importin subunit alpha-3, importin alpha Q1, importin subunit alpha-4, and IPOA3. KPNA4 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. A number of KPNA4 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. ELISA, Immunocytochemistry, Immunofluorescence, and Immunohistochemistry are also common applications.