Products

Western Blot

Entrez GeneID

GeneBank Accession#

Protein Accession#

Gene Name

PSME3

Gene Alias

Ki, PA28-gamma, PA28G, REG-GAMMA

Gene Description

proteasome (prosome, macropain) activator subunit 3 (PA28 gamma; Ki)

Omim ID

Gene Ontology

Gene Summary

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. The immunoproteasome contains an alternate regulator, referred to as the 11S regulator or PA28, that replaces the 19S regulator. Three subunits (alpha, beta and gamma) of the 11S regulator have been identified. This gene encodes the gamma subunit of the 11S regulator. Six gamma subunits combine to form a homohexameric ring. Two transcript variants encoding different isoforms have been identified. [provided by RefSeq

Other Designations

11S regulator complex gamma subunit|Ki antigen|Ki nuclear autoantigen|activator of multicatalytic protease subunit 3|proteasome activator 28-gamma|proteasome activator subunit 3