Molecular mechanisms of coronavirus RNA capping and methylation.
Molecular mechanisms of coronavirus RNA capping and methylation.
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冠状病毒RNA加帽和甲基化的分子机制
DOI:
10.1007/s12250-016-3726-4
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发表时间:
2016-02
影响因子:
5.5
通讯作者:
Guo D
中科院分区:
文献类型:
--
作者:
Chen Y;Guo D
The 5′-cap structures of eukaryotic mRNAs are important for RNA stability, pre-mRNA splicing, mRNA export, and protein translation. Many viruses have evolved mechanisms for generating their own cap structures with methylation at the N7 position of the capped guanine and the ribose 2′-Oposition of the first nucleotide, which help viral RNAs escape recognition by the host innate immune system. The RNA genomes of coronavirus were identified to have 5′-caps in the early 1980s. However, for decades the RNA capping mechanisms of coronaviruses remained unknown. Since 2003, the outbreak of severe acute respiratory syndrome coronavirus has drawn increased attention and stimulated numerous studies on the molecular virology of coronaviruses. Here, we review the current understanding of the mechanisms adopted by coronaviruses to produce the 5′-cap structure and methylation modification of viral genomic RNAs.
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