The myriad roles of RNA structure in the flavivirus life cycle

As positive-sense RNA viruses, the genomes of flaviviruses serve as the template for all stages of the viral life cycle, including translation, replication, and infectious particle production. Yet, they encode just 10 proteins, suggesting that the structure and dynamics of the viral RNA itself helps...

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Main Authors: Quinn H. Abram, Breanna N. Landry, Alex B. Wang, Ronja F. Kothe, Hannah C.H. Hauch, Selena M. Sagan
Format: Article
Language:English
Published: Taylor & Francis Group 2024-12-01
Series:RNA Biology
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Online Access:https://www.tandfonline.com/doi/10.1080/15476286.2024.2357857
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author Quinn H. Abram
Breanna N. Landry
Alex B. Wang
Ronja F. Kothe
Hannah C.H. Hauch
Selena M. Sagan
author_facet Quinn H. Abram
Breanna N. Landry
Alex B. Wang
Ronja F. Kothe
Hannah C.H. Hauch
Selena M. Sagan
author_sort Quinn H. Abram
collection DOAJ
description As positive-sense RNA viruses, the genomes of flaviviruses serve as the template for all stages of the viral life cycle, including translation, replication, and infectious particle production. Yet, they encode just 10 proteins, suggesting that the structure and dynamics of the viral RNA itself helps shepherd the viral genome through these stages. Herein, we highlight advances in our understanding of flavivirus RNA structural elements through the lens of their impact on the viral life cycle. We highlight how RNA structures impact translation, the switch from translation to replication, negative- and positive-strand RNA synthesis, and virion assembly. Consequently, we describe three major themes regarding the roles of RNA structure in flavivirus infections: 1) providing a layer of specificity; 2) increasing the functional capacity; and 3) providing a mechanism to support genome compaction. While the interactions described herein are specific to flaviviruses, these themes appear to extend more broadly across RNA viruses.
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spelling doaj-art-83efb38e3a03435ab9d68df284942b572025-08-20T01:54:54ZengTaylor & Francis GroupRNA Biology1547-62861555-85842024-12-0121163465010.1080/15476286.2024.2357857The myriad roles of RNA structure in the flavivirus life cycleQuinn H. Abram0Breanna N. Landry1Alex B. Wang2Ronja F. Kothe3Hannah C.H. Hauch4Selena M. Sagan5Department of Biochemistry, McGill University, Montreal, QC, CanadaDepartment of Microbiology & Immunology, University of British Columbia, Vancouver, BC, CanadaDepartment of Biochemistry, McGill University, Montreal, QC, CanadaDepartment of Microbiology & Immunology, University of British Columbia, Vancouver, BC, CanadaDepartment of Microbiology & Immunology, McGill University, Montreal, QC, CanadaDepartment of Biochemistry, McGill University, Montreal, QC, CanadaAs positive-sense RNA viruses, the genomes of flaviviruses serve as the template for all stages of the viral life cycle, including translation, replication, and infectious particle production. Yet, they encode just 10 proteins, suggesting that the structure and dynamics of the viral RNA itself helps shepherd the viral genome through these stages. Herein, we highlight advances in our understanding of flavivirus RNA structural elements through the lens of their impact on the viral life cycle. We highlight how RNA structures impact translation, the switch from translation to replication, negative- and positive-strand RNA synthesis, and virion assembly. Consequently, we describe three major themes regarding the roles of RNA structure in flavivirus infections: 1) providing a layer of specificity; 2) increasing the functional capacity; and 3) providing a mechanism to support genome compaction. While the interactions described herein are specific to flaviviruses, these themes appear to extend more broadly across RNA viruses.https://www.tandfonline.com/doi/10.1080/15476286.2024.2357857FlavivirusZika virusdengue virustranslationreplicationpackaging
spellingShingle Quinn H. Abram
Breanna N. Landry
Alex B. Wang
Ronja F. Kothe
Hannah C.H. Hauch
Selena M. Sagan
The myriad roles of RNA structure in the flavivirus life cycle
RNA Biology
Flavivirus
Zika virus
dengue virus
translation
replication
packaging
title The myriad roles of RNA structure in the flavivirus life cycle
title_full The myriad roles of RNA structure in the flavivirus life cycle
title_fullStr The myriad roles of RNA structure in the flavivirus life cycle
title_full_unstemmed The myriad roles of RNA structure in the flavivirus life cycle
title_short The myriad roles of RNA structure in the flavivirus life cycle
title_sort myriad roles of rna structure in the flavivirus life cycle
topic Flavivirus
Zika virus
dengue virus
translation
replication
packaging
url https://www.tandfonline.com/doi/10.1080/15476286.2024.2357857
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