Rabbit anti-Human PSME2 Polyclonal Antibody

Uniprot Id

Q9UL46

Target Species

Human

Target Name

PSME2

Target Full Name

Proteasome activator complex subunit 2

Target Function

Implicated in immunoproteasome assembly and required for efficient antigen processing. The PA28 activator complex enhances the generation of class I binding peptides by altering the cleavage pattern of the proteasome.

Target Protein Families

PA28 family

Target Research Area

Cell Biology

Target Synonyms

11S regulator complex beta subunit; 11S regulator complex subunit beta; Activator of multicatalytic protease subunit 2; Cell migration inducing protein 22; MCP activator 31 kD subunit; PA28 beta; PA28b; PA28beta; Proteasome (prosome macropain) activator subunit 2 (PA28 beta); Proteasome (prosome macropain) activator subunit 2; Proteasome activator 28 beta; Proteasome activator 28 subunit beta; Proteasome activator complex subunit 2; Proteasome activator hPA28 subunit beta; Proteasome activator subunit 2; PSME 2; PSME2; PSME2_HUMAN; REG beta; REG-beta; REGbeta

Target Background

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 beta subunit of the 11S regulator, one of the two 11S subunits that is induced by gamma-interferon. Three beta and three alpha subunits combine to form a heterohexameric ring. Six pseudogenes have been identified on chromosomes 4, 5, 8, 10 and 13.