Anti-PSMB9 antibodies are used in the immunodetection of the protein proteasome 20S subunit beta 9. In humans, the canonical protein has a reported length of 219 amino acid residues and a mass of 23.3 kDa. Its subcellular localization is in the nucleus and cytoplasm. Up to 2 different isoforms have been reported for this protein. It is notably expressed in many tissues, such as the cervix, vagina, and appendix. It is a member of the Peptidase T1B protein family. Post-translational modifications have been described, including protein cleavage. Synonyms for this target antigen include PRAAS3, PSMB6i, RING12, beta1i, proteasome subunit beta type-9, and LMP2. PSMB9 gene orthologs have been reported in the mouse, rat, bovine, frog and chimpanzee species. A number of PSMB9 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. Flow Cytometry, Immunofluorescence, and Immunohistochemistry are also common applications.