title: Genetic analysis of a human rotavirus that belongs to subgroup I but has an RNA pattern typical of subgroup II human rotaviruses.
abstract: We have previously found (O. Nakagomi, T. Nakagomi, H. Oyamada, and T. Suto, J. Med. Virol. 17:29-34, 1985), during an epidemiological study in Japan, a novel human rotavirus that belongs to subgroup I but has a long RNA pattern typical of subgroup II human rotaviruses. From the stool specimen containing this virus, we successfully isolated in MA104 cells a rotavirus, designated AU-1, which possesses these novel characteristics. The possibility that strain AU-1 was a laboratory contaminant of an animal rotavirus previously adapted to tissue culture cells was ruled out, and the identity of the AU-1 strain was established. Genetic analysis by RNA-RNA hybridization revealed that the AU-1 strain is not a simple reassortant between subgroup I and II human rotaviruses but that it shares a high level of sequence homology only with the gene encoding VP7 (the major neutralization protein) of serotype 3 human rotaviruses. Weak homology of the genomic RNA segments was also observed between the AU-1 strain and animal rotavirus strains, including rhesus rotavirus strain RRV and bovine rotavirus strain NCDV. These results suggest that the AU-1 strain may be an animal rotavirus that infected a human.
mesh_terms: D000818:Animals; D004591:Electrophoresis, Polyacrylamide Gel; D005814:Genes, Viral; D006801:Humans; D009693:Nucleic Acid Hybridization; D012367:RNA, Viral / Q000032:analysis / Q000235:genetics*; D012401:Rotavirus / Q000145:classification / Q000235:genetics*; D012689:Sequence Homology, Nucleic Acid; D014764:Viral Proteins / Q000235:genetics; D015678:Viral Structural Proteins
chemical_list: D012367:RNA, Viral; D014764:Viral Proteins; D015678:Viral Structural Proteins