The impact of RNA structure on picornavirus IRES activity.

The impact of RNA structure on picornavirus IRES activity.
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DOI:
10.1016/j.tim.2008.01.013
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发表时间:
2008-05
影响因子:
15.9
通讯作者:
Martínez-Salas E
Martínez-Salas E
中科院分区:
生物学1区
文献类型:
--
作者:
Martínez-Salas E

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内部核糖体进入位点(IRES)元件由顺式作用区域组成,该区域将翻译机制招募到mRNA的内部位置。RNA结构介导机制参与内部核糖体募集的生物学相关性目前正在从病毒IRES元件的结构和功能分析中出现。然而,由于在遗传距离较远的mrna中发现的IRES元件似乎在不同的RNA结构中组织,因此对IRES活性的结构要求的定义具有挑战性,需要多学科方法。这篇综述讨论了在小核糖核酸病毒基因组中建立RNA结构和IRES功能之间关系的最新报道,这是首次描述含有这些特化调控元件的RNA。
Internal ribosome entry site (IRES) elements consist of cis-acting regions that recruit the translation machinery to an internal position in the mRNA. The biological relevance of RNA structure-mediated mechanisms involved in internal ribosome recruitment is now emerging from the structural and functional analysis of viral IRES elements. However, because IRES elements found in genetically distant mRNAs seem to be organized in different RNA structures, the definition of the structural requirements for IRES activity is challenging and demands multidisciplinary approaches. This review discusses the latest reports that establish a relationship between RNA structure and IRES function in picornavirus genomes, the first RNAs described to contain these specialized regulatory elements.
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