The space between notes: emerging roles for translationally silent ribosomes.

The space between notes: emerging roles for translationally silent ribosomes.
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注释之间的空间:翻译无声核糖体的新兴角色。

DOI:
10.1016/j.tibs.2022.02.003
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发表时间:
2022-06
影响因子:
13.8
通讯作者:
Campbell, Zachary T.
Campbell, Zachary T.
中科院分区:
生物学1区
文献类型:
--
作者:
Smith, Patrick R.;Pandit, Sapna C.;Loerch, Sarah;Campbell, Zachary T.

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除了在翻译中的核心功能外,核糖体还可以采用完全组装但没有mRNA的非活性结构。我们描述了闲置的真核生物核糖体的丰度是如何受到广泛的生物条件的影响,包括病毒感染、营养缺乏和发育线索。空核糖体可以提供一种排除核糖体翻译的手段,同时也保护它们免于降解,并且封闭核糖体的因子的可变身份可以赋予不同的功能。我们认为,空闲和活跃核糖体平衡的调节变化提供了一种微调翻译的手段。我们提供了一个闲置核糖体的概述,描述了什么是已知的关于他们的功能,并强调可能澄清他们的生物学作用的问题。
In addition to their central functions in translation, ribosomes can adopt inactive structures that are fully assembled yet devoid of mRNA. We describe how the abundance of idle eukaryotic ribosomes is influenced by a broad range of biological conditions spanning viral infection, nutrient deprivation, and developmental cues. Vacant ribosomes may provide a means to exclude ribosomes from translation while also shielding them from degradation, and the variable identity of factors that occlude ribosomes may impart distinct functionality. We propose that regulated changes in the balance of idle and active ribosomes provides a means to fine-tune translation. We provide an overview of idle ribosomes, describe what is known regarding their function, and highlight questions that may clarify their biological roles.
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