Functionally interchangeable cis-acting RNA elements in both genome segments of a picorna-like plant virus

Abstract Cis-acting RNA structures in the genomes of RNA viruses play critical roles in viral infection, yet their importance in the bipartite genomes of the picorna-like, plant-infecting comoviruses has not been carefully investigated. We previously characterized SLC, a stem-loop structure in the 5...

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Autores principales:	Jiangbo Guo, Junping Han, Junyan Lin, John Finer, Anne Dorrance, Feng Qu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/10287aedb14f4acf978ce83aad0559dc
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spelling	oai:doaj.org-article:10287aedb14f4acf978ce83aad0559dc2021-12-02T12:32:24ZFunctionally interchangeable cis-acting RNA elements in both genome segments of a picorna-like plant virus10.1038/s41598-017-01243-z2045-2322https://doaj.org/article/10287aedb14f4acf978ce83aad0559dc2017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01243-zhttps://doaj.org/toc/2045-2322Abstract Cis-acting RNA structures in the genomes of RNA viruses play critical roles in viral infection, yet their importance in the bipartite genomes of the picorna-like, plant-infecting comoviruses has not been carefully investigated. We previously characterized SLC, a stem-loop structure in the 5′ untranslated region (UTR) of the bean pod mottle comovirus (BPMV) RNA2, and found it to be essential for RNA2 accumulation in infected cells. Here we report the identification of SL1, a similar cis-acting element in the other BPMV genome segment - RNA1. SL1 encompasses a portion of RNA1 5′ UTR but extends into the coding sequence for nine nucleotides, thus was missed in the previous study. While the stems of SL1 and SLC share little sequence similarity, their end loops are of the same size and identical for 11 of 15 nucleotides. Importantly, SL1 and SLC are functionally interchangeable, and separate exchanges of the stem and loop portions were likewise well tolerated. By contrast, the conserved loop sequence tolerated minimal perturbations. Finally, stem-loop structures with similar configurations were identified in two other comoviruses. Therefore, SL1 and SLC are likely essential comoviral RNA structures that play a conserved function in viral infection cycles.Jiangbo GuoJunping HanJunyan LinJohn FinerAnne DorranceFeng QuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jiangbo Guo Junping Han Junyan Lin John Finer Anne Dorrance Feng Qu Functionally interchangeable cis-acting RNA elements in both genome segments of a picorna-like plant virus
description	Abstract Cis-acting RNA structures in the genomes of RNA viruses play critical roles in viral infection, yet their importance in the bipartite genomes of the picorna-like, plant-infecting comoviruses has not been carefully investigated. We previously characterized SLC, a stem-loop structure in the 5′ untranslated region (UTR) of the bean pod mottle comovirus (BPMV) RNA2, and found it to be essential for RNA2 accumulation in infected cells. Here we report the identification of SL1, a similar cis-acting element in the other BPMV genome segment - RNA1. SL1 encompasses a portion of RNA1 5′ UTR but extends into the coding sequence for nine nucleotides, thus was missed in the previous study. While the stems of SL1 and SLC share little sequence similarity, their end loops are of the same size and identical for 11 of 15 nucleotides. Importantly, SL1 and SLC are functionally interchangeable, and separate exchanges of the stem and loop portions were likewise well tolerated. By contrast, the conserved loop sequence tolerated minimal perturbations. Finally, stem-loop structures with similar configurations were identified in two other comoviruses. Therefore, SL1 and SLC are likely essential comoviral RNA structures that play a conserved function in viral infection cycles.
format	article
author	Jiangbo Guo Junping Han Junyan Lin John Finer Anne Dorrance Feng Qu
author_facet	Jiangbo Guo Junping Han Junyan Lin John Finer Anne Dorrance Feng Qu
author_sort	Jiangbo Guo
title	Functionally interchangeable cis-acting RNA elements in both genome segments of a picorna-like plant virus
title_short	Functionally interchangeable cis-acting RNA elements in both genome segments of a picorna-like plant virus
title_full	Functionally interchangeable cis-acting RNA elements in both genome segments of a picorna-like plant virus
title_fullStr	Functionally interchangeable cis-acting RNA elements in both genome segments of a picorna-like plant virus
title_full_unstemmed	Functionally interchangeable cis-acting RNA elements in both genome segments of a picorna-like plant virus
title_sort	functionally interchangeable cis-acting rna elements in both genome segments of a picorna-like plant virus
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/10287aedb14f4acf978ce83aad0559dc
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Functionally interchangeable cis-acting RNA elements in both genome segments of a picorna-like plant virus

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