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Messenger RNAs bearing tRNA-like features exemplified by interferon alfa 5 mRNA

The purpose of this work was to ascertain whether liver mRNA species share common structural features with hepatitis C virus (HCV) mRNA that allow them to support the RNase-P (pre-tRNA/processing enzyme) cleavage reaction in vitro. The presence of RNase-P competitive elements in the liver mRNA popul...

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Autores principales: Díaz-Toledano, Rosa, Gómez, Jordi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Basel 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4565877/
https://www.ncbi.nlm.nih.gov/pubmed/25900662
http://dx.doi.org/10.1007/s00018-015-1908-0
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author Díaz-Toledano, Rosa
Gómez, Jordi
author_facet Díaz-Toledano, Rosa
Gómez, Jordi
author_sort Díaz-Toledano, Rosa
collection PubMed
description The purpose of this work was to ascertain whether liver mRNA species share common structural features with hepatitis C virus (HCV) mRNA that allow them to support the RNase-P (pre-tRNA/processing enzyme) cleavage reaction in vitro. The presence of RNase-P competitive elements in the liver mRNA population was determined by means of biochemical techniques, and a set of sensitive mRNA species were identified through microarray screening. Cleavage specificity and substrate length requirement of around 200 nts, were determined for three mRNA species. One of these cleavage sites was found in interferon-alpha 5 (IFNA5) mRNA between specific base positions and with the characteristic RNase-P chemistry of cleavage. It was mapped within a cloverleaf-like structure revealed by a comparative structural analysis based on several direct enzymes and chemical probing methods of three RNA fragments of increasing size, and subsequently contrasted against site-directed mutants. The core region was coincident with the reported signal for the cytoplasmic accumulation region (CAR) in IFNAs. Striking similarities with the tRNA-like element of the antagonist HCV mRNA were found. In general, this study provides a new way of looking at a variety of viral tRNA-like motifs as this type of structural mimicry might be related to specific host mRNA species rather than, or in addition to, tRNA itself. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s00018-015-1908-0) contains supplementary material, which is available to authorized users.
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spelling pubmed-45658772015-09-15 Messenger RNAs bearing tRNA-like features exemplified by interferon alfa 5 mRNA Díaz-Toledano, Rosa Gómez, Jordi Cell Mol Life Sci Research Article The purpose of this work was to ascertain whether liver mRNA species share common structural features with hepatitis C virus (HCV) mRNA that allow them to support the RNase-P (pre-tRNA/processing enzyme) cleavage reaction in vitro. The presence of RNase-P competitive elements in the liver mRNA population was determined by means of biochemical techniques, and a set of sensitive mRNA species were identified through microarray screening. Cleavage specificity and substrate length requirement of around 200 nts, were determined for three mRNA species. One of these cleavage sites was found in interferon-alpha 5 (IFNA5) mRNA between specific base positions and with the characteristic RNase-P chemistry of cleavage. It was mapped within a cloverleaf-like structure revealed by a comparative structural analysis based on several direct enzymes and chemical probing methods of three RNA fragments of increasing size, and subsequently contrasted against site-directed mutants. The core region was coincident with the reported signal for the cytoplasmic accumulation region (CAR) in IFNAs. Striking similarities with the tRNA-like element of the antagonist HCV mRNA were found. In general, this study provides a new way of looking at a variety of viral tRNA-like motifs as this type of structural mimicry might be related to specific host mRNA species rather than, or in addition to, tRNA itself. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s00018-015-1908-0) contains supplementary material, which is available to authorized users. Springer Basel 2015-04-22 2015 /pmc/articles/PMC4565877/ /pubmed/25900662 http://dx.doi.org/10.1007/s00018-015-1908-0 Text en © The Author(s) 2015 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Research Article
Díaz-Toledano, Rosa
Gómez, Jordi
Messenger RNAs bearing tRNA-like features exemplified by interferon alfa 5 mRNA
title Messenger RNAs bearing tRNA-like features exemplified by interferon alfa 5 mRNA
title_full Messenger RNAs bearing tRNA-like features exemplified by interferon alfa 5 mRNA
title_fullStr Messenger RNAs bearing tRNA-like features exemplified by interferon alfa 5 mRNA
title_full_unstemmed Messenger RNAs bearing tRNA-like features exemplified by interferon alfa 5 mRNA
title_short Messenger RNAs bearing tRNA-like features exemplified by interferon alfa 5 mRNA
title_sort messenger rnas bearing trna-like features exemplified by interferon alfa 5 mrna
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4565877/
https://www.ncbi.nlm.nih.gov/pubmed/25900662
http://dx.doi.org/10.1007/s00018-015-1908-0
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