Some reassembly required.

Some reassembly required.
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DOI:
10.1111/j.1365-2958.2009.07017.x
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发表时间:
2010-02
影响因子:
3.6
通讯作者:
Cate JH
Cate JH
中科院分区:
生物学2区
文献类型:
--
作者:
Cate JH

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细胞将大量的能量用于合成蛋白质,而大部分能量消耗用于制造核糖体,核糖体是位于翻译中心的RNA-蛋白质机器。当细胞中的核糖体受损时,即,在压力条件下,细胞必须首先识别损伤,然后做出反应。Remme及其同事表明,细菌可以通过原位替换受损蛋白质来修复核糖体,而不是从头开始重建核糖体,从而节省大量时间和能量。鉴于翻译的核心作用,这种修复机制可能在自然界中广泛存在。
Cells invest a significant amount of their energy synthesizing proteins, and a large portion of the energy expenditure goes into making ribosomes, the RNA-protein machines at the centre of translation. When ribosomes are damaged in a cell, i.e., during stressful conditions, cells must first recognize the damage and then mount a response. Remme and colleagues show that instead of having to rebuild ribosomes from scratch, bacteria can repair ribosomes by replacing damaged proteins in situ, thereby saving significant time and energy. Given the central role of translation, such repair mechanisms might be widespread in nature.
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