Recombinant Human Proteasome subunit beta type-2 (PSMB2)

Uniprot Id

P49721

Target Species

Human

Target Name

PSMB2

Target Full Name

Proteasome subunit beta type-2

Target Function

Non-catalytic component of the 20S core proteasome complex involved in the proteolytic degradation of most intracellular proteins. This complex plays numerous essential roles within the cell by associating with different regulatory particles. Associated with two 19S regulatory particles, forms the 26S proteasome and thus participates in the ATP-dependent degradation of ubiquitinated proteins. The 26S proteasome plays a key role in the maintenance of protein homeostasis by removing misfolded or damaged proteins that could impair cellular functions, and by removing proteins whose functions are no longer required. Associated with the PA200 or PA28, the 20S proteasome mediates ubiquitin-independent protein degradation. This type of proteolysis is required in several pathways including spermatogenesis (20S-PA200 complex) or generation of a subset of MHC class I-presented antigenic peptides (20S-PA28 complex).

Target Subcellular Location

Cytoplasm. Nucleus.

Target Protein Families

Peptidase T1B family

Target Research Area

Immunology

Target Synonyms

HC7 I; Macropain subunit C7 I; Macropain subunit C7-I; Multicatalytic endopeptidase complex subunit C7 1; Multicatalytic endopeptidase complex subunit C7 I; Multicatalytic endopeptidase complex subunit C7-I; Proteasome (prosome, macropain) subunit beta type 2; Proteasome beta 2 subunit; Proteasome component C7 I; Proteasome component C7-I; Proteasome subunit beta type-2; PSB2_HUMAN; Psmb2

Target Background

The proteasome is a multicatalytic proteinase complex with a highly ordered ring-shaped 20S core structure. The core structure 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. 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 member of the proteasome B-type family, also known as the T1B family, that is a 20S core beta subunit. Multiple alternatively spliced transcript variants encoding distinct isoforms have been found for this gene.