PSME3
Lua error in Module:Infobox_gene at line 33: attempt to index field 'wikibase' (a nil value). Proteasome activator complex subunit 3 is a protein that in humans is encoded by the PSME3 gene.[1][2]
Function
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 gamma subunit of the 11S regulator. Six gamma subunits combine to form a homohexameric ring. Two transcript variants encoding different isoforms have been identified.[2]
Interactions
PSME3 has been shown to interact with P53[3] and Mdm2.[3]
References
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External links
- PSME3 human gene location in the UCSC Genome Browser.
- PSME3 human gene details in the UCSC Genome Browser.
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