Aliases for PSMA5 Gene
External Ids for PSMA5 Gene
Previous GeneCards Identifiers for PSMA5 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 peptidase T1A family, that is a 20S core alpha subunit. Multiple alternatively spliced transcript variants encoding two distinct isoforms have been found for this gene. [provided by RefSeq, Dec 2010]
GeneCards Summary for PSMA5 Gene
PSMA5 (Proteasome 20S Subunit Alpha 5) is a Protein Coding gene. Diseases associated with PSMA5 include Down Syndrome and Wolfram Syndrome 1. Among its related pathways are Regulation of activated PAK-2p34 by proteasome mediated degradation and Antigen processing-Cross presentation. Gene Ontology (GO) annotations related to this gene include endopeptidase activity and threonine-type endopeptidase activity. An important paralog of this gene is PSMA8.
UniProtKB/Swiss-Prot Summary for PSMA5 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).