Nucleotide sequences of four RNA segments of a reovirus isolated from the mud crab Scylla serrata provide evidence that this virus belongs to a new genus in the family Reoviridae

Nucleotide sequences of four RNA segments of a reovirus isolated from the mud crab Scylla serrata... This is the first sequence-based characterization of mud crab ( Scylla serrata ) reovirus (SsRV), which causes severe disease of cultured mud crabs in southern China. We sequenced and analyzed genome segments S1, S2, S3, and S7, which were 4,327, 2,721, 2,715, and 1,517 nucleotides long, respectively. Conserved motifs were found at the 5’ (AUAAAU) and 3’ (AACGAU) ends of each segment. RNA segments S1, S2, S3, and S7 each contained a single open reading frame (ORF) that encoded predicted proteins of 160, 100, 96, and 46 kDa, respectively. The ORFs of segments S1 and S2 showed distant homologies (< 25%) with cognate genes of other reoviruses, whereas the ORFs of segments S3 and S7 had no homologies with any other viral genes. Based on these observations, we propose that SsRV should be considered a member of a new genus in the family Reoviridae. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Nucleotide sequences of four RNA segments of a reovirus isolated from the mud crab Scylla serrata provide evidence that this virus belongs to a new genus in the family Reoviridae

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Publisher
Springer Vienna
Copyright
Copyright © 2011 by Springer-Verlag
Subject
Biomedicine; Virology ; Medical Microbiology ; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-010-0852-4
Publisher site
See Article on Publisher Site

Abstract

This is the first sequence-based characterization of mud crab ( Scylla serrata ) reovirus (SsRV), which causes severe disease of cultured mud crabs in southern China. We sequenced and analyzed genome segments S1, S2, S3, and S7, which were 4,327, 2,721, 2,715, and 1,517 nucleotides long, respectively. Conserved motifs were found at the 5’ (AUAAAU) and 3’ (AACGAU) ends of each segment. RNA segments S1, S2, S3, and S7 each contained a single open reading frame (ORF) that encoded predicted proteins of 160, 100, 96, and 46 kDa, respectively. The ORFs of segments S1 and S2 showed distant homologies (< 25%) with cognate genes of other reoviruses, whereas the ORFs of segments S3 and S7 had no homologies with any other viral genes. Based on these observations, we propose that SsRV should be considered a member of a new genus in the family Reoviridae.

Journal

Archives of VirologySpringer Journals

Published: Mar 1, 2011

References

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