|Other Names||Proteasome subunit beta type-5, Macropain epsilon chain, Multicatalytic endopeptidase complex epsilon chain, Proteasome chain 6, Proteasome epsilon chain, Proteasome subunit MB1, Proteasome subunit X, PSMB5, LMPX, MB1, X|
|Format||Synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder. Reconstitute with 0.1 ml DI water for a final concentration of 1 mg/ml.|
|Storage||Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C.|
|Precautions||This product is for research use only. Not for use in diagnostic or therapeutic procedures.|
|Synonyms||LMPX, MB1, X|
|Function||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). Within the 20S core complex, PSMB5 displays a chymotrypsin-like activity.|
|Cellular Location||Cytoplasm. Nucleus|
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Provided below are standard protocols that you may find useful for product applications.
The proteasome is a multicatalytic proteinase complex witha highly ordered ring-shaped 20S core structure. The core structureis composed of 4 rings of 28 non-identical subunits; 2 rings arecomposed of 7 alpha subunits and 2 rings are composed of 7 betasubunits. Proteasomes are distributed throughout eukaryotic cellsat a high concentration and cleave peptides in anATP/ubiquitin-dependent process in a non-lysosomal pathway. Anessential function of a modified proteasome, the immunoproteasome,is the processing of class I MHC peptides. This gene encodes amember of the proteasome B-type family, also known as the T1Bfamily, that is a 20S core beta subunit in the proteasome. Thiscatalytic subunit is not present in the immunoproteasome and isreplaced by catalytic subunit 3i (proteasome beta 8 subunit).Multiple transcript variants encoding different isoforms have beenfound for this gene.
Ri, M., et al. Leukemia 24(8):1506-1512(2010)Lu, S., et al. Exp. Hematol. 37(7):831-837(2009)Lu, S., et al. Exp. Hematol. 36(10):1278-1284(2008)Oerlemans, R., et al. Blood 112(6):2489-2499(2008)Wang, L., et al. Clin. Cancer Res. 14(11):3503-3513(2008)
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