Anti-COPS9 antibodies are used in the immunodetection of the protein COP9 signalosome subunit 9. In humans, the canonical protein has a reported length of 57 amino acid residues and a mass of 6.2 kDa. Its subcellular localization is in the nucleus and cytoplasm. Up to 2 different isoforms have been reported for this protein. A member of the CSN9 protein family, COPS9 is a known component of the COP9 signalosome complex (CSN), a complex involved in various cellular and developmental processes. Synonyms for this target antigen include CSN acidic protein, helicase/primase complex protein, myeloma overexpressed 2, myeloma-overexpressed gene 2 protein, and COP9 signalosome complex subunit 9. COPS9 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Western Blot is the most common application for the COPS9 antibodies listed below. ELISA, Immunocytochemistry, and Immunofluorescence are also common applications.