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Plos One : the Genomic Signature of Human Rhinoviruses A, B and C, Volume 7

By Jhaveri, Ravi

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Book Id: WPLBN0003961078
Format Type: PDF eBook :
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Reproduction Date: 2015

Title: Plos One : the Genomic Signature of Human Rhinoviruses A, B and C, Volume 7  
Author: Jhaveri, Ravi
Volume: Volume 7
Language: English
Subject: Journals, Science, Medical Science
Collections: Periodicals: Journal and Magazine Collection
Historic
Publication Date:
Publisher: Plos

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Jhaveri, R. (n.d.). Plos One : the Genomic Signature of Human Rhinoviruses A, B and C, Volume 7. Retrieved from http://www.worldlibrary.in/


Description
Description : Human rhinoviruses are single stranded positive sense RNA viruses that are presented in more than 50% of acute upper respiratory tract infections. Despite extensive studies on the genetic diversity of the virus, little is known about the forces driving it. In order to explain this diversity, many research groups have focused on protein sequence requirements for viable, functional and transmissible virus but have missed out an important aspect of viral evolution such as the genomic ontology of the virus. This study presents for the first time the genomic signature of 111 fully sequenced HRV strains from all three groups HRV-A, HRV-B and HRV-C. We observed an HRV genome tendency to eliminate CpG and UpA dinucleotides, coupling with over-representation of UpG and CpA. We propose a specific mechanism which describes how rapid changes in the HRV genomic sequence can take place under the strict control of conservation of the polypeptide backbone. Moreover, the distribution of the observed under- and over-represented dinucleotides along the HRV genome is presented. Distance matrice tables based on CpG and UpA odds ratios were constructed and viewed as heatmaps and distance trees. None of the suppressions can be attributed to codon usage or in RNA secondary structure requirements. Since viral recognition is dependent on RNA motifs rich in CpG and UpA, it is possible that the overall described genome evolution mechanism acts in order to protect the virus from host recognition.

 

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