Aliases for PSMB3 Gene
External Ids for PSMB3 Gene
Previous GeneCards Identifiers for PSMB3 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. The 26 S proteasome may be involved in trinucleotide repeat expansion, a phenomenon which is associated with many hereditary neurological diseases. Pseudogenes have been identified on chromosomes 2 and 12. Alternative splicing results in multiple transcript variants [provided by RefSeq, Sep 2013]
GeneCards Summary for PSMB3 Gene
PSMB3 (Proteasome Subunit Beta 3) is a Protein Coding gene. Among its related pathways are Ubiquitin-Proteasome Dependent Proteolysis and Interleukin-3, 5 and GM-CSF signaling. GO annotations related to this gene include threonine-type endopeptidase activity.
UniProtKB/Swiss-Prot for PSMB3 Gene
The proteasome is a multicatalytic proteinase complex which is characterized by its ability to cleave peptides with Arg, Phe, Tyr, Leu, and Glu adjacent to the leaving group at neutral or slightly basic pH. The proteasome has an ATP-dependent proteolytic activity.