核糖体的救援,接近结束
Agata L Starosta1, Daniel N Wilson1
1Gene Center, Department for Biochemistry and Center for integrated Protein Science Munich (CiPSM), University of Munich, 81377 Munich, Germany.
Cell
|March 4, 2014
概括
蛋白Dom34在蛋白质合成过程中拯救了停滞的核糖体. 新的研究表明,Dom34还可以回收细胞mRNA的3'未翻译区域中的核糖体.
科学领域:
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
- 生物化学 生物化学
背景情况:
- 蛋白质合成期间的核糖体停滞会阻碍细胞功能.
- 众所周知,Dom34蛋白在拯救停滞的核糖体中发挥着重要作用.
研究的目的:
- 在真核生物中研究Dom34蛋白的全部功能范围.
- 了解除了截断的mRNA之外的核糖体救援和循环的机制.
主要方法:
- 核糖体概况被用来分析核糖体在细胞mRNA中的分布.
- 对不同mRNA区域中的核糖体占用率进行定量分析.
主要成果:
- Dom34的功能超出了在截断的mRNA上停滞不前的核糖体的拯救范围.
- 突如其来的发现,核糖体被Dom34在许多mRNA的3'未翻译区域中循环利用.
结论:
- Dom34在翻译质量控制中的作用比以前理解的要更广泛.
- Dom34在3' UTR中循环利用核糖体是一个重要的,以前未被识别的细胞过程.
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