26S Proteasome Non-Atpase Regulatory Subunit 9 (PSMD9) Reagents

26S proteasome non-ATPase regulatory subunit 9

Acts as a chaperone during the assembly of the 26S proteasome, specifically of the base subcomplex of the PA700/19S regulatory complex (RC). During the base subcomplex assembly is part of an intermediate PSMD9:PSMC6:PSMC3 module, also known as modulator trimer complex; PSMD9 is released during the further base assembly process.

Proteasome subunit p27 family

Expressed in all tissues tested, highly expressed in liver and kidney.

26S proteasome non ATPase regulatory subunit 9; 26S proteasome non-ATPase regulatory subunit 9; 26S proteasome regulatory subunit p27; Homolog of rat Bridge 1; MGC8644; p27; Proteasome (prosome macropain) 26S subunit non ATPase 9; Proteasome 26S non ATPase regulatory subunit 9; Proteasome 26S subunit non ATPase 9; PSMD 9; Psmd9; PSMD9_HUMAN; Rpn4

The 26S proteasome is a multicatalytic proteinase complex with a highly ordered structure composed of 2 complexes, a 20S core and a 19S regulator. The 20S core is composed of 4 rings of 28 non-identical subunits; 2 rings are composed of 7 alpha subunits and 2 rings are composed of 7 beta subunits. The 19S regulator is composed of a base, which contains 6 ATPase subunits and 2 non-ATPase subunits, and a lid, which contains up to 10 non-ATPase subunits. Proteasomes are distributed throughout eukaryotic cells at a high concentration and cleave peptides in an ATP/ubiquitin-dependent process in a non-lysosomal pathway. An essential function of a modified proteasome, the immunoproteasome, is the processing of class I MHC peptides. This gene encodes a non-ATPase subunit of the 19S regulator. Three transcript variants encoding two different isoforms have been found for this gene.