Molecular diversity of the aminoterminal region of the G protein gene of human respiratory syncytial virus subgroup B.
Pathol Biol (Paris)
; 56(2): 50-7, 2008 Mar.
Article
em En
| MEDLINE
| ID: mdl-17919847
ABSTRACT
Two major antigenic subgroups (designated A and B) have been described for human respiratory syncytial virus (HRSV). Between and within the two main subgroups, there is antigenic variation in the attachment protein G. The variability of the G protein is known to be located in two hypervariable regions of the ectodomain. Most investigators have studied the gene segment coding the C-terminal end of the protein, and little is known about the N-terminal variable region. In the present study, the genetic variability of HRSV subgroup B was evaluated by nucleotide sequencing of the N-terminal region of the G gene of 52 Tunisian isolates. Tunisian subgroup B isolates clustered into two main lineages designated arbitrarily as Tu-GB1 and Tu-GB2. Three distinct subtypes were identified within genotype Tu-GB2. The inter- and intragenotype nucleotide variability ranged from 4 to 8% and from 0 to 4%, respectively. Overall divergence values of the G sequences were inferior or equal to 15% at the aminoacid level. Comparison of sequences among Tunisian HRSV strains and viruses isolated in other geographical areas during different epidemics demonstrated close similarity to strains from Kenya, Belgium, the UK, Qatar, Canada and South Korea.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Variação Genética
/
Proteínas Virais
/
Produtos do Gene gag
/
Vírus Sincicial Respiratório Humano
Tipo de estudo:
Prognostic_studies
Limite:
Child, preschool
/
Humans
/
Infant
Idioma:
En
Revista:
Pathol Biol (Paris)
Ano de publicação:
2008
Tipo de documento:
Article
País de afiliação:
Tunísia