PELO:HBS1L和ABCE1解离非终止mRNA上的核糖体
中文名称
通路描述
非终止mRNA(缺乏终止密码子的mRNA)会导致核糖体在mRNA 3'端附近停滞,并通过特定途径解决。在此情况下,PELO、eRF1的旁系物以及HBS1L:GTP(eRF3的旁系物)组成的复合物结合到停滞的核糖体靠近亚基界面和mRNA进入位点。PELO:HBS1L优先作用于结合到mRNA上少于12个核苷酸延伸至核糖体P位点后的核糖体。HBS1L水解GTP并从PELO和核糖体上解离,暴露出PELO上的位点,ABCE1结合于此。ABCE1随后水解ATP引起构象变化,将核糖体分裂为40S和60S亚基(Shao et al. 2013, Shao and Hegde 2014,以及从酵母同源物DOM34:HBS1和古菌同源物在Becker et al. 2012中推断,从酵母同源物在Saito et al. 2013中推断)。ABCE1和mRNA可能仍结合到40S核糖体亚基上,而肽酰-tRNA仍结合到60S核糖体亚基上,正如ASC介导的挽救途径中一样(Becker et al. 2012,综述Franckenberg et al. 2012)。
英文描述
EGFR interacts with phospholipase C-gamma Activated epidermal growth factor receptors (EGFR) can stimulate phosphatidylinositol (PI) turnover. Activated EGFR can activate phospholipase C-gamma1 (PLC-gamma1, i.e. PLCG1) which hydrolyses phosphatidylinositol 4,5-bisphosphate (PIP2) to inositol 1,4,5-triphosphate (IP3) and diacylglycerol (DAG). IP3 is instrumental in the release of calcium from intracellular stores and DAG is involved in protein kinase C activation.
所含基因
9 个基因