Comprehensive in vivo secondary structure of the SARS-CoV-2 genome reveals novel regulatory motifs and mechanisms
Severe-acute-respiratory-syndrome-related coronavirus 2 (SARS-CoV-2) is the positive-sense RNA virus that causes coronavirus disease 2019 (COVID-19). The genome of SARS-CoV-2 is unique among viral RNAs in its vast potential to form RNA structures, yet as much as 97% of its 30 kilobases have not been...
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Published in | Molecular Cell Vol. 81; no. 3; pp. 584 - 598.e5 |
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Main Authors | , , , , , |
Format | Journal Article Web Resource |
Language | English |
Published |
United States
Elsevier Inc
04.02.2021
Elsevier BV |
Subjects | |
Online Access | Get full text |
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Summary: | Severe-acute-respiratory-syndrome-related coronavirus 2 (SARS-CoV-2) is the positive-sense RNA virus that causes coronavirus disease 2019 (COVID-19). The genome of SARS-CoV-2 is unique among viral RNAs in its vast potential to form RNA structures, yet as much as 97% of its 30 kilobases have not been structurally explored. Here, we apply a novel long amplicon strategy to determine the secondary structure of the SARS-CoV-2 RNA genome at single-nucleotide resolution in infected cells. Our in-depth structural analysis reveals networks of well-folded RNA structures throughout Orf1ab and reveals aspects of SARS-CoV-2 genome architecture that distinguish it from other RNA viruses. Evolutionary analysis shows that several features of the SARS-CoV-2 genomic structure are conserved across β-coronaviruses, and we pinpoint regions of well-folded RNA structure that merit downstream functional analysis. The native, secondary structure of SARS-CoV-2 presented here is a roadmap that will facilitate focused studies on the viral life cycle, facilitate primer design, and guide the identification of RNA drug targets against COVID-19.
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•The SARS-CoV-2 genome is probed at single-nucleotide resolution in infected cells•RNA structure prediction reveals an elaborate SARS-CoV-2 genome architecture•Networks of well-folded secondary structure are conserved across β-coronaviruses•Disruption of conserved secondary structures with LNAs inhibits viral growth
Using cell-based chemical probing, Huston et al. provide an experimentally determined structural map of the SARS-CoV-2 RNA genome in infected cells. The map reveals networks of well-folded RNA structures that are conserved in other coronaviruses. Disruption of these structures inhibits SARS-CoV-2 growth. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 These authors contributed equally Lead contact |
ISSN: | 1097-2765 1097-4164 |
DOI: | 10.1016/j.molcel.2020.12.041 |