Sequence analysis of rice dwarf phytoreovirus genome segments S4, S5, and S6: Comparison with the equivalent wound tumor virus segments

Nobuhiro Suzuki, Yuzuko Watanabe, Tomonobu Kusano, Yoshichika Kitagawa

    研究成果: Article査読

    21 被引用数 (Scopus)

    抄録

    The complete nucleotide sequences of genome segments S4, S5, and S6 of rice dwarf phytoreovirus (RDV) were determined. S4 and S5 consist of 2468 and 2570 base pairs, respectively, S5 thus being larger in size than S4, contrary to the situation suggested by their relative migration in a polyacrylamide gel. S6 is 1699 nucleotides long. The individual segments have segment-specific inverted repeats adjacent to the conserved terminal sequences (5′GGUAAA-UGAU3′ for S4, 5′GGCAAA-UGAU3′ for S5 and S6). S4, S5, and S6 each have single long open reading frames encoding 727, 801, and 509 amino acids, respectively. A low level of amino acid sequence homology was observed between RDV S4 and wound tumor virus (WTV) S4 (22.4%), and between RDV S6 and WTV S6 (20.2%). On the other hand, RDV S5 and WTV S5 show 52.0% amino acid sequence similarity, indicating that S5 is much more conserved than any other segments of RDV and WTV reported so far. Further comparative analyses indicate that the RDV segment shows a greater frequency of usage of codons XYG and XYC, and much less frequent usage of codon XYA than the equivalent WTV segment, this codon preference bias being more conspicuous than expected from the base contents.

    本文言語English
    ページ(範囲)446-454
    ページ数9
    ジャーナルVirology
    179
    1
    DOI
    出版ステータスPublished - 1990 11

    ASJC Scopus subject areas

    • Virology

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