The Rpn4 ELISA kits listed below are analytical tools for measuring concentrations of Rpn4 in various samples. Rpn4 is an alternative name for the human PSMD9 gene, which encodes the protein, proteasome 26S subunit, non-ATPase 9. It has been mentioned that Rpn4 plays a role in the regulation of transcription, among other functions. Structurally, the PSMD9 protein is 223 amino acid residues in length and 24.7 kilodaltons in mass. However, as many as 3 protein isoforms have been identified. In terms of tissue specificity, it is reported to be expressed in all tissues tested, highly expressed in liver and kidney. Other names for this target antigen include p27 and 26S proteasome non-ATPase regulatory subunit 9. Click on the following ELISA kits for more detailed information, including target reactivity and assay sensitivity.