PSMB8(proteasome subunit beta 8),癌症关联基因,基因ID:5696,蛋白酶体是一种多催化蛋白酶复合物,具有高度有序的环状20S核结构。核心结构由4个28个不相同亚单位的环组成,2个环由7个α亚单位组成,2个环由7个β亚单位组成。蛋白酶体以高浓度分布于真核细胞,并在非溶酶体途径的ATP/泛素依赖过程中分裂肽。经修饰的蛋白酶体免疫蛋白酶体的一个基本功能是加工I类mhc肽。这个基因编码蛋白酶体B型家族的一个成员,也被称为t1b家族,是一个20s核心β亚单位。该基因位于MHC(主要组织相容性复合体)的Ⅱ类区域。该基因的表达由γ干扰素诱导,该基因产物取代了免疫蛋白酶体中的催化亚单位3(蛋白酶体β5亚单位)。蛋白水解过程需要产生一个成熟的亚单位。已经鉴定出两种编码两种亚型的选择性转录物;两种亚型都经过处理以产生相同的成熟亚基。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。