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首页> 外文期刊>FEBS letters. >Why proteins evolve at different rates: the functional hypothesis versus the mistranslation-induced protein misfolding hypothesis.
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Why proteins evolve at different rates: the functional hypothesis versus the mistranslation-induced protein misfolding hypothesis.

机译:为什么蛋白质以不同的速度进化:功能假说与错误翻译诱导的蛋白质错误折叠假说。

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摘要

Protein evolutionary rates have been presumed to be mostly determined by the density of functionally important amino acids in a given protein. They have been shown to correlate with variables intuitively related to functional importance of proteins, such as protein dispensability and protein-protein interactions. Surprisingly, the best correlate of the evolutionary rates has turned out to be not the functional importance of a protein, but the expression level of the protein. Drummond and Wilke suggest that the dominant role of expression levels in slowing the rate of protein evolution stems from a selection pressure against mistranslation-induced protein misfolding. We will review current evidence for and against different hypotheses on determining evolutionary rates.
机译:据推测,蛋白质进化速率主要取决于给定蛋白质中功能重要氨基酸的密度。已显示它们与直观上与蛋白质功能重要性相关的变量相关,例如蛋白质可分配性和蛋白质-蛋白质相互作用。出人意料的是,进化速率的最佳相关性不是蛋白质的功能重要性,而是蛋白质的表达水平。 Drummond和Wilke建议,表达水平在减慢蛋白质进化速度中的主要作用源于针对错误翻译诱导的蛋白质错误折叠的选择压力。在确定进化速率时,我们将审查支持和反对不同假设的当前证据。

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