26S蛋白酶体(人来源的) | 26S proteasome

【产品形式】：艾美捷为您提供的26S蛋白酶体(人来源的)形式为10mM Tris-Cl, pH7.0, 25mM KCl, 10mM NaCl, 1.1mM MgCl2, 0.1mM EDTA, 1mM DTT, 1mM soduim azide, 2mM ATP, 50% glycerol

【背景资料】：26S proteasome: High integrity, high purity 26S proteasome complex from human erythrocytes. Characterised by sucrose density gradient chromatography, native-PAGE and fluorogenic peptide substrate activity assay to determine 26S / 30S proteasome ratio, purity and chymotrypsin-like, trypsin-like and caspase-like activities. Degrades both peptide substrates and polyubiquitinated proteins (ubiquitin independent and ubiquitin dependent activity). Background: Proteasomes are non-lysosomal proteolytic complexes localised primarily in the cytoplasm and in the nucleus of eukaryotic cells. The 26S proteasome structure is composed of a 20S proteasome catalytic core complex and one or two 19S (PA700) regulatory subcomplexes (26S and 30S complexes respectively). The 20S core comprises two copies of 14 subunits (7 alpha subunits and 7 beta subunits) arranged in a α7β7β7α7 cylindrical array. Proteolytic activities are determined by the β1 (caspase-like), β2 (trypsin-like) and β5 (chymotrypsin-like) subunits, access to which is guarded by the α-subunits. The 19S regulatory unit consists of six ATPase and at least ten non-ATPase subunits that are required for ubiquitinated protein binding, deubiquitination, substrate unfolding and translocation to the 20S catalytic core. Varying catalytic subunit composition (β1, β1i; β2, β2i; β5, β5i) results in a variety of possible subtypes from full constitutive proteasome (β1, β2, β5) through mixed populations to full inducible / immunoproteasome (β1i, β2i, β5i). Alternative regulatory complexes such as the PA200 and 11S proteasome activators confer different substrate specificities and activity compared to the 19S regulator.

英国Viva Bioscience公司是一家研发、生产并销售蛋白降解相关产品的公司。其产品主要用于细胞自噬、泛素化和蛋白酶体研究（也覆盖其他蛋白降解相关的产品），其产品价格合理、质量可靠且具有创新性。目前VIVA Bioscience提供逾460种产品，涉及细胞自噬、蛋白泛素化和讲解相关的所有试剂盒、蛋白、底物以及多种抑制剂、激活剂等全系列产品。作为多家进口品牌的中国区域总代理，艾美捷科技与Viva Bioscience一道为中国科研工作者们提供更好、更新的自噬、泛素化和蛋白酶体等研究工具。

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