Characterisation and phylogenetic analysis of the VP7 proteins of serotype G6 and G8 human rotaviruses.
Serotype G6 and G8 rotaviruses are rarely found in man and may have originated in animals. Human serotype G6 and G8 rotaviruses, isolated from hospitalised children at various locations in Australia, were characterised. Deduced amino acid sequences of the major neutralising antigen, V7, showed significant identity to the cognate proteins of prototype human and bovine G6 and G8 viruses, respectively, and the strains reacted with G6 and G8 serotype-specific neutralising monoclonal antibodies, respectively, in an enzyme immunoassay. The VP4 type was determined as P[14] for all strains tested. Phylogenetic analysis of these and other human and bovine VP7 sequences suggested that a single inter-species transmission event, possibly from cattle, may have led to the emergence of G6 viruses in man. In contrast, the exchange of genes between human and bovine G8 viruses may have occurred onmore than one occasion, or these genes may have originated in a different host.
Cooney
M A
MA
Gorrell
R J
RJ
Palombo
E A
EA
Department of Gastroenterology and Clinical Nutrition, Royal Children's Hospital, Flemington Road, Parkville, Victoria 3052 and †School of Engineering and Science, Swinburne University of Technology, PO Box 218 Hawthorn, Victoria 3122, Australia.
D000595:Amino Acid Sequence; D000956:Antigens, Viral; D002213:Capsid / Q000235:genetics*; D036022:Capsid Proteins; D018076:DNA, Complementary / Q000737:chemistry / Q000235:genetics; D006801:Humans; D008969:Molecular Sequence Data; D010802:Phylogeny; D012367:RNA, Viral / Q000235:genetics; D020133:Reverse Transcriptase Polymerase Chain Reaction; D012401:Rotavirus / Q000145:classification / Q000235:genetics*; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA; D017386:Sequence Homology, Amino Acid; D012703:Serotyping
D000956:Antigens, Viral; D036022:Capsid Proteins; D018076:DNA, Complementary; D012367:RNA, Viral; C050779:VP7 protein, Rotavirus