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Genetic and biological characterization of Muko virus, a new distinct member of the species Great Island virus (genus Orbivirus , family Reoviridae ), isolated from ixodid ticks in Japan

Genetic and biological characterization of Muko virus, a new distinct member of the species Great... Among the tick-borne orbiviruses (genus Orbiviru s, family Reoviridae ), 36 serotypes are currently classified within a single virus species, Great Island virus . In this study, we report the first characterization of a tick-borne orbivirus isolated from the tick Ixodes turdus in Japan, which we identified as a new member of the species Great Island virus . The virus isolate, designated Muko virus (MUV), replicated and induced cytopathic effects in BHK-21, Vero E6, and CCL-141 cells and caused high mortality in suckling mice after intracerebral inoculation. Full genome sequence analysis showed that MUV shared the greatest phylogenetic similarity with Tribeč virus in terms of the amino acid sequences of all viral proteins except for outer capsid protein 1 (OC1; VP4 of MUV). Analysis of genome segment 9 in MUV detected an uninterrupted open reading frame that overlaps with VP6 (Hel), which putatively encodes a molecular and functional equivalent of NS4 from Great Island virus. Our study provides new insights into the geographic distribution, genetic diversity, and evolutionary history of the members of the species Great Island virus . http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Genetic and biological characterization of Muko virus, a new distinct member of the species Great Island virus (genus Orbivirus , family Reoviridae ), isolated from ixodid ticks in Japan

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References (41)

Publisher
Springer Journals
Copyright
Copyright © 2015 by Springer-Verlag Wien
Subject
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
DOI
10.1007/s00705-015-2588-7
pmid
26350980
Publisher site
See Article on Publisher Site

Abstract

Among the tick-borne orbiviruses (genus Orbiviru s, family Reoviridae ), 36 serotypes are currently classified within a single virus species, Great Island virus . In this study, we report the first characterization of a tick-borne orbivirus isolated from the tick Ixodes turdus in Japan, which we identified as a new member of the species Great Island virus . The virus isolate, designated Muko virus (MUV), replicated and induced cytopathic effects in BHK-21, Vero E6, and CCL-141 cells and caused high mortality in suckling mice after intracerebral inoculation. Full genome sequence analysis showed that MUV shared the greatest phylogenetic similarity with Tribeč virus in terms of the amino acid sequences of all viral proteins except for outer capsid protein 1 (OC1; VP4 of MUV). Analysis of genome segment 9 in MUV detected an uninterrupted open reading frame that overlaps with VP6 (Hel), which putatively encodes a molecular and functional equivalent of NS4 from Great Island virus. Our study provides new insights into the geographic distribution, genetic diversity, and evolutionary history of the members of the species Great Island virus .

Journal

Archives of VirologySpringer Journals

Published: Dec 1, 2015

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