Analysis of Template Variations on RNA Synthesis by Respiratory Syncytial Virus Polymerase.
Analysis of Template Variations on RNA Synthesis by Respiratory Syncytial Virus Polymerase.
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DOI:
10.3390/v15010047
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发表时间:
2022-12-23
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影响因子:
--
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文献类型:
--
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Respiratory syncytial virus (RSV) is a significant threat to infants and elderly individuals globally. Currently, there are no effective therapies or treatments for RSV infection because of an insufficient understanding of the RSV viral machinery. In this study, we investigated the effects of the template variations on RNA synthesis by the RSV polymerase through in vitro RNA synthesis assays. We confirmed the previously reported back-priming activity of the RSV polymerase, which is likely due to the secondary structure of the RNA template. We found that the expansion of the hairpin loop size of the RNA template abolishes the RSV polymerase back-priming activity. At the same time, it seemingly does not affect the de novo RNA synthesis activities of the RSV polymerase. Interestingly, our results show that the RSV polymerase also has a new primer-based terminal extension activity that adds nucleotides to the template and primer in a nonspecific manner. We also mapped the impact of the RNA 5′ chemical group on its mobility in a urea-denaturing RNA gel shift assay. Overall, these results enhance our knowledge about the RNA synthesis processes of the RSV polymerase and may guide future therapeutic efforts to develop effective antiviral drugs for RSV treatment.
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DOI:
10.1016/s0140-6736(22)00478-0
发表时间:
2022-05-28
期刊:
Lancet (London, England)
影响因子:
--
作者:
Li Y;Wang X;Blau DM;Caballero MT;Feikin DR;Gill CJ;Madhi SA;Omer SB;Simões EAF;Campbell H;Pariente AB;Bardach D;Bassat Q;Casalegno JS;Chakhunashvili G;Crawford N;Danilenko D;Do LAH;Echavarria M;Gentile A;Gordon A;Heikkinen T;Huang QS;Jullien S;Krishnan A;Lopez EL;Markić J;Mira-Iglesias A;Moore HC;Moyes J;Mwananyanda L;Nokes DJ;Noordeen F;Obodai E;Palani N;Romero C;Salimi V;Satav A;Seo E;Shchomak Z;Singleton R;Stolyarov K;Stoszek SK;von Gottberg A;Wurzel D;Yoshida LM;Yung CF;Zar HJ;Respiratory Virus Global Epidemiology Network;Nair H;RESCEU investigators
通讯作者:
RESCEU investigators
影响因子:
5.8
作者:
Heylen, Elisabeth;Neyts, Johan;Jochmans, Dirk
通讯作者:
Jochmans, Dirk
DOI:
10.1073/pnas.1016759108
发表时间:
2011-04-26
影响因子:
11.1
作者:
Martin, Arnold;Hoefs, Nadja;Schneider, Urs
通讯作者:
Schneider, Urs
影响因子:
2.9
作者:
Jang, SB;Hung, LW;Holbrook, SR
通讯作者:
Holbrook, SR
影响因子:
5.4
作者:
Fearns, R;Collins, PL;Peeples, ME
通讯作者:
Peeples, ME