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Analysis of the complete genome sequence of acute bee paralysis virus shows that it belongs to the novel group of insect-infecting RNA viruses.

Govan V.A., Leat N., Allsopp M., Davison S.

The complete genome sequence of acute bee paralysis virus (ABPV) was determined. The 9470 nucleotide, polyadenylated RNA genome encoded two open reading frames (ORF1 and ORF2), which were separated by 184 nucleotides. The deduced amino acid sequence of the 5' ORF1 (nucleotides 605 to 6325) showed significant similarity to the RNA-dependent RNA polymerase, helicase, and protease domains of viruses from the picornavirus, comovirus, calicivirus, and sequivirus families, as well as to a novel group of insect-infecting RNA viruses. The 3' ORF2 (nucleotides 6509-9253) was proposed as encoding a capsid polyprotein with three major structural proteins (35, 33, and 24 kDa) and a minor protein (9.4 kDa). This was confirmed by N-terminal sequence analysis of two of these proteins. The overall genome structure of ABPV showed similarities to those of Drosophila C virus, Plautia stali intestine virus, Rhopalosiphum padi virus, and Himetobi P virus, which have been classified into a novel group of picorna-like insect-infecting RNA viruses called cricket paralysis-like viruses. It is suggested that ABPV belongs to the cricket paralysis-like viruses.

Virology 277:457-463(2000) [PubMed] [Europe PMC]

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