The DHH1/RCKp54 family of helicases: an ancient family of proteins that promote translational silencing.

The DHH1/RCKp54 family of helicases: an ancient family of proteins that promote translational silencing.
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DOI:
10.1016/j.bbagrm.2013.03.006
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发表时间:
2013-08
影响因子:
4.7
通讯作者:
Coller, Jeff
Coller, Jeff
中科院分区:
生物学2区
文献类型:
--
作者:
Presnyak, Vlad;Coller, Jeff

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翻译控制是基因表达的一个重要方面。信息特异性翻译抑制因子已经被发现了几十年。然而,最近的证据表明,存在一种抑制大多数mrna翻译能力的一般机制。这种活性最好归因于一个保守的RNA解旋酶家族,称为DHH1 / RCKp54家族。这些解旋酶的功能是促进翻译沉默。通过将mRNA转化为静止状态,DHH1 / RCKp54解旋酶促进mRNA的破坏或储存。在这篇综述中,我们描述了这些解旋酶的已知作用,并提出了一个机制模型来解释它们的作用模式。
Translational control is a vital aspect of gene expression. Message specific translational repressors have been known of decades. Recent evidence, however, suggest that a general machinery exists that dampens the translational capacity of the majority of mRNAs. This activity has been best ascribed to a conserved family of RNA helicases called the DHH1 / RCKp54 family. The function of these helicases is to promote translational silencing. By transitioning mRNA into quiescence, DHH1 / RCKp54 helicases promote either mRNA destruction or storage. In this review we describe the known roles of these helicases and propose a mechanistic model to explain their mode of action.
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