Subgenomic messenger RNAs: mastering regulation of (+)-strand RNA virus life cycle.

Subgenomic messenger RNAs: mastering regulation of (+)-strand RNA virus life cycle.
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DOI:
10.1016/j.virol.2011.02.007
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发表时间:
2011-04-10
期刊:
影响因子:
3.7
通讯作者:
Bujarski JJ
Bujarski JJ
中科院分区:
医学3区
文献类型:
--
作者:
Sztuba-Solińska J;Stollar V;Bujarski JJ

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许多(+)链RNA病毒使用亚基因组(SG)RNA作为蛋白质表达的信使,或调节其病毒生命周期。已经描述了用于合成SG RNA的三种不同机制。第一种机制涉及在(-)链RNA模板上的内部起始,并且需要内部SGP启动子。第二种机制产生一个提前终止的(-)链RNA,它被用作模板来产生SG RNA。第三种机制使用不连续的RNA合成,同时制造(-)链RNA模板。大多数SG RNA被翻译成结构蛋白或与发病机制相关的蛋白质:然而,其他SG RNA调节翻译和复制之间的转换,作为复制或翻译的核糖核酸调节子,或支持RNA-RNA重组。在这篇综述中,我们讨论了这些功能的SG RNA,以及它们如何影响病毒的复制,翻译和重组。
Many (+)-strand RNA viruses use subgenomic (SG) RNAs as messengers for protein expression, or to regulate their viral life cycle. Three different mechanisms have been described for the synthesis of SG RNAs. The first mechanism involves internal initiation on a (−)-strand RNA template and requires an internal SGP promoter. The second mechanism makes a prematurely terminated (−)-strand RNA which is used as template to make the SG RNA. The third mechanism uses discontinuous RNA synthesis while making the (−)-strand RNA templates. Most SG RNAs are translated into structural proteins or proteins related to pathogenesis: however other SG RNAs regulate the transition between translation and replication, function as riboregulators of replication or translation, or support RNA–RNA recombination. In this review we discuss these functions of SG RNAs and how they influence viral replication, translation and recombination.
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