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The p22 RNA silencing suppressor of the crinivirus Tomato chlorosis virus preferentially binds long dsRNAs preventing them from cleavage
Viruses encode silencing suppressor proteins to counteract RNA silencing. Because dsRNA plays a key role in silencing, a general silencing suppressor strategy is dsRNA binding. The p22 suppressor of the plant virus Tomato chlorosis virus (ToCV; genus Crinivirus, family Closteroviridae) has been desc...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier Inc.
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7111720/ https://www.ncbi.nlm.nih.gov/pubmed/26629953 http://dx.doi.org/10.1016/j.virol.2015.11.008 |
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author | Landeo-Ríos, Yazmín Navas-Castillo, Jesús Moriones, Enrique Cañizares, M. Carmen |
author_facet | Landeo-Ríos, Yazmín Navas-Castillo, Jesús Moriones, Enrique Cañizares, M. Carmen |
author_sort | Landeo-Ríos, Yazmín |
collection | PubMed |
description | Viruses encode silencing suppressor proteins to counteract RNA silencing. Because dsRNA plays a key role in silencing, a general silencing suppressor strategy is dsRNA binding. The p22 suppressor of the plant virus Tomato chlorosis virus (ToCV; genus Crinivirus, family Closteroviridae) has been described as having one of the longest lasting local suppressor activities. However, the mechanism of action of p22 has not been characterized. Here, we show that ToCV p22 binds long dsRNAs in vitro, thus interfering with their processing into small RNAs (sRNAs) by an RNase III-type Dicer homolog enzyme. Additionally, we have studied whether a putative zinc finger motif found in p22 has a role in dsRNA binding and suppressor function. The efficient ability of p22 to suppress RNA silencing, triggered by hairpin transcripts transiently expressed in planta, supports the relationship between its ability to bind dsRNA in vitro and its ability to inhibit RNA silencing in vivo. |
format | Online Article Text |
id | pubmed-7111720 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Elsevier Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-71117202020-04-02 The p22 RNA silencing suppressor of the crinivirus Tomato chlorosis virus preferentially binds long dsRNAs preventing them from cleavage Landeo-Ríos, Yazmín Navas-Castillo, Jesús Moriones, Enrique Cañizares, M. Carmen Virology Article Viruses encode silencing suppressor proteins to counteract RNA silencing. Because dsRNA plays a key role in silencing, a general silencing suppressor strategy is dsRNA binding. The p22 suppressor of the plant virus Tomato chlorosis virus (ToCV; genus Crinivirus, family Closteroviridae) has been described as having one of the longest lasting local suppressor activities. However, the mechanism of action of p22 has not been characterized. Here, we show that ToCV p22 binds long dsRNAs in vitro, thus interfering with their processing into small RNAs (sRNAs) by an RNase III-type Dicer homolog enzyme. Additionally, we have studied whether a putative zinc finger motif found in p22 has a role in dsRNA binding and suppressor function. The efficient ability of p22 to suppress RNA silencing, triggered by hairpin transcripts transiently expressed in planta, supports the relationship between its ability to bind dsRNA in vitro and its ability to inhibit RNA silencing in vivo. Elsevier Inc. 2016-01-15 2015-11-27 /pmc/articles/PMC7111720/ /pubmed/26629953 http://dx.doi.org/10.1016/j.virol.2015.11.008 Text en Copyright © 2015 Elsevier Inc. All rights reserved. Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active. |
spellingShingle | Article Landeo-Ríos, Yazmín Navas-Castillo, Jesús Moriones, Enrique Cañizares, M. Carmen The p22 RNA silencing suppressor of the crinivirus Tomato chlorosis virus preferentially binds long dsRNAs preventing them from cleavage |
title | The p22 RNA silencing suppressor of the crinivirus Tomato chlorosis virus preferentially binds long dsRNAs preventing them from cleavage |
title_full | The p22 RNA silencing suppressor of the crinivirus Tomato chlorosis virus preferentially binds long dsRNAs preventing them from cleavage |
title_fullStr | The p22 RNA silencing suppressor of the crinivirus Tomato chlorosis virus preferentially binds long dsRNAs preventing them from cleavage |
title_full_unstemmed | The p22 RNA silencing suppressor of the crinivirus Tomato chlorosis virus preferentially binds long dsRNAs preventing them from cleavage |
title_short | The p22 RNA silencing suppressor of the crinivirus Tomato chlorosis virus preferentially binds long dsRNAs preventing them from cleavage |
title_sort | p22 rna silencing suppressor of the crinivirus tomato chlorosis virus preferentially binds long dsrnas preventing them from cleavage |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7111720/ https://www.ncbi.nlm.nih.gov/pubmed/26629953 http://dx.doi.org/10.1016/j.virol.2015.11.008 |
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