Three forms of AU-1 like human rotaviruses differentiated by their overall genomic constellation and by the sequence of their VP8*

Archives of Virology
R GollopI Shif

Abstract

Insight into the origin of human rotaviruses carrying the AU-1 VP4 allele was gained by examining their genomic RNA constellation using RNA-RNA hybridization and by sequencing the VP8* portion (nucleotides 1-750) of their gene 4. AU-1 like viruses isolated in Israel from children attending outpatient clinics were classified into three sub-genogroups based on RNA-RNA hybridization analysis: Subgenogroup 1 consists of two strains (Ro-5829 and Ro-5960) which belong to the AU-1 genogroup, since all their 11 segments hybridized to AU-1 segments. Subgenogroup 2 consists of one reassortant virus (Ro-5193) of which seven RNA segments hybridized to AU-1 segments and the remaining four segments hybridized to NCDV (bovine rotavirus). Subgenogroup 3 consists of four reassortant viruses (Ro-6460, Ro-6584, Ro-6784 and Ro-7044) which had a common genome constellation: only four of their RNA segments hybridized to AU-1 and the other seven segments hybridized to NCDV segments. Sequence analysis of the VP8* gene also revealed a three level pattern of homology with the AU-1 prototype and the local AU-1 like strains which was consistent with the overall genomic (RNA-RNA) constellation: Subgenogroup 1 had 98-98.1% homology with the AU-1 prototype; ...Continue Reading

Citations

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