Molecular characterization of the genome segments S4, S6 and S7 of rice gall dwarf virus

Molecular characterization of the genome segments S4, S6 and S7 of rice gall dwarf virus Rice gall dwarf virus (RGDV) is a member of the genus Phytoreovirus within the family Reovirdae . Its genome has 12 segments of double-stranded RNA (dsRNA), of which the nucleotide sequences of segments S4, S6, and S7 were determined, providing the first complete genome sequence of RGDV. Each of the segments S4, S6, and S7 contained conserved terminal sequences conforming to the RGDV consensus, 5′-GGXA … UGAU-3′ (X = U or C). Each segment had a single predicted open reading frame encoding proteins with calculated molecular weights of 79.8, 58.6, and 53.3 kDa. These proteins appeared to be homologous to those encoded by the corresponding segments of rice dwarf virus and wound tumor virus, the other known members of the same genus, having about 20–30% amino acid identity to them. It is therefore likely that RGDV S4 and S6 encode non-structural proteins and S7 an inner core protein. Probable homologies between the segments of all known phytoreoviruses are summarized. Beyond these similarities, the RGDV proteins displayed no significant similarity to any other reported viral proteins. Archives of Virology Springer Journals

Molecular characterization of the genome segments S4, S6 and S7 of rice gall dwarf virus

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Copyright © 2007 by Springer-Verlag
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
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