title: Molecular characterization of a novel adult diarrhoea rotavirus strain J19 isolated in China and its significance for the evolution and origin of group B rotaviruses.
abstract: The complete genome of a novel adult diarrhoea rotavirus strain J19 was cloned and sequenced using an improved single-primer sequence-independent method. The complete genome is 17,961 bp and is AU-rich (66.49 %). Northern blot analysis and genomic sequence analysis indicated that segments 1-11 encode 11 viral proteins, respectively. Protein alignments with the corresponding proteins of J19 with B219, and groups A, B and C rotaviruses, produced higher per cent sequence identities to B219. Among groups A, B and C rotaviruses, 10 proteins from group B rotaviruses exhibited slightly higher amino acid sequence identity to the J19 proteins, but proteins of J19 showed low amino acid sequence identity with groups A and C rotaviruses. Construction of unrooted phylogenetic trees using a set of known proteins and representatives of three known rotavirus groups revealed that six structural proteins were positioned close to B219 and the basal nodes of groups A, B and C lineages, although with a preferred association with group B lineages. Phylogenetic analysis of the five non-structural proteins showed a similar trend. The results of the serological analysis, protein sequence analysis and phylogenetic analysis suggested that J19 would be a novel rotavirus strain with great significance to the evolution and origin of group B rotaviruses.
authors.affiliation: Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Danzhou city, Hainan province 571737, PR China.
authors.forename: Shengjun
authors.initials: S
authors.lastname: Jiang
authors.affiliation: State Key Laboratory for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, PR China.
authors.forename: Shaozhong
authors.initials: S
authors.lastname: Ji
authors.affiliation: State Key Laboratory for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, PR China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Tang
authors.affiliation: State Key Laboratory for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, PR China.
authors.forename: Xiaoying
authors.initials: X
authors.lastname: Cui
authors.affiliation: State Key Laboratory for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, PR China.
authors.forename: Hongyang
authors.initials: H
authors.lastname: Yang
authors.affiliation: State Key Laboratory for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, PR China.
authors.forename: Biao
authors.initials: B
authors.lastname: Kan
authors.affiliation: State Key Laboratory for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, PR China.
authors.forename: Shouyi
authors.initials: S
authors.lastname: Gao
mesh_terms: D000328:Adult; D002460:Cell Line; D002681:China / Q000453:epidemiology; D003967:Diarrhea / Q000453:epidemiology* / Q000821:virology*; D019143:Evolution, Molecular; D016679:Genome, Viral; D006801:Humans; D008969:Molecular Sequence Data; D010802:Phylogeny; D012401:Rotavirus / Q000145:classification* / Q000235:genetics* / Q000302:isolation & purification; D012400:Rotavirus Infections / Q000453:epidemiology / Q000821:virology; D017422:Sequence Analysis, DNA; D017361:Viral Nonstructural Proteins / Q000737:chemistry / Q000235:genetics; D015678:Viral Structural Proteins / Q000737:chemistry / Q000235:genetics
chemical_list: D017361:Viral Nonstructural Proteins; D015678:Viral Structural Proteins