Aliases for PSMB1 Gene
External Ids for PSMB1 Gene
Previous GeneCards Identifiers for PSMB1 Gene
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. This gene is tightly linked to the TBP (TATA-binding protein) gene in human and in mouse, and is transcribed in the opposite orientation in both species. [provided by RefSeq, Jul 2008]
GeneCards Summary for PSMB1 Gene
PSMB1 (Proteasome 20S Subunit Beta 1) is a Protein Coding gene. Diseases associated with PSMB1 include Type 1 Diabetes Mellitus 8 and Hypocalciuric Hypercalcemia, Familial, Type I. Among its related pathways are Regulation of degradation of deltaF508 CFTR in CF and Metabolism of proteins. Gene Ontology (GO) annotations related to this gene include threonine-type endopeptidase activity. An important paralog of this gene is PSMB8.
UniProtKB/Swiss-Prot Summary for PSMB1 Gene
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).