Anti-RPSA antibodies are used in the immunodetection of the protein ribosomal protein SA. In humans, the canonical protein has a reported length of 295 amino acid residues and a mass of 32.9 kDa. Its subcellular localization is in the cell membrane, nucleus, and cytoplasm. It is notably widely expressed in many tissue types. A member of the Universal ribosomal protein uS2 protein family, Rpsa is known to be required for the assembly and/or stability of the 40S ribosomal subunit. Post-translational modifications have been described, including protein cleavage. The RPSA gene has been associated with the disease, Asplenia. Synonyms for this target antigen include 67LR, ICAS, LAMBR, LAMR1, LBP, LBP/p40, LRP, and 37LRP. RPSA gene orthologs have been reported in the mouse, rat, bovine, zebrafish, chimpanzee and chicken species. Over 70 citations in the literature describe the use of Rpsa antibodies in research. Western Blot is a widely used application for these antibodies. ELISA, Immunocytochemistry, Immunofluorescence, and Immunohistochemistry are also common applications.