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        Complete nucleotide sequences of four dsRNAs associated with a new chrysovirus infecting Aspergillus fumigatus

        Author
        Jamal, Atif
        Bignell, Elaine M.
        Coutts, Robert H.A.
        Attention
        2299/11392
        Abstract
        A new double-stranded RNA (dsRNA) virus designated A. fumigatus chrysovirus (AfuCV), belonging to the family Chrysoviridae, has been identified in the filamentous fungus Aspergillus fumigatus. The virus was detected in five of 390 A. fumigatus isolates screened. Analysis of purified dsRNA revealed four distinct species 3560, 3159, 3006 and 2863 base pairs in length (dsRNAs 1-4) which were cloned and sequenced. Each dsRNA contains a single open reading frame (ORF) with short 5' and 3' untranslated regions containing strictly conserved termini. The deduced 1114 amino acid (aa) protein (molecular mass=128 kDa) encoded by the dsRNA1 ORF showed homology to the RNA-dependent RNA polymerase (RdRP) of viruses belonging to the Chrysoviridae. Eight motifs characteristic of RdRPs were identified. The dsRNA2 ORF encodes the putative coat protein subunit (953aa; molecular mass=107 kDa). The dsRNA3 and dsRNA4 ORFs respectively encode putative proteins (891aa, molecular mass=99 kDa) and (847aa, molecular mass=95 kDa), both of which have significant similarity to proteins encoded by comparable chrysovirus dsRNAs. The dsRNA profile, amino acid sequence alignments, and phylogenetic analyses all indicate that AfuCV is a new species within the family Chrysoviridae.
        Publication date
        2010-10
        Published in
        Virus Research
        Published version
        https://doi.org/10.1016/j.virusres.2010.07.008
        Other links
        http://hdl.handle.net/2299/11392
        Metadata
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