Restricted variability of a 17 nucleotide stretch within the 5'-noncoding region of poliovirus genome.
Epidemiol Infect
; 103(3): 671-83, 1989 Dec.
Article
en En
| MEDLINE
| ID: mdl-2558034
ABSTRACT
The outbreak of poliomyelitis in Finland in 1984 was caused by a wild strain of poliovirus 3 with uncommon molecular and antigenic properties. We prepared a synthetic oligonucleotide probe complementary to nucleotides 494-510 in the 5'-noncoding part of the genome of a representative strain of the outbreak. This short nucleotide stretch was found to be relatively well conserved within the outbreak and uncommon among 82 independent poliovirus isolates. It may thus be a useful marker for screening isolates to identify those requiring more detailed genetic comparison. The sequences of the corresponding region of the genome are known for 32 separate poliovirus strains and 3 coxsackie B virus strains and show 6 fully conserved nucleotides that could assume a constant hairpin-loop position in a hypothetical secondary structure of the RNA. This could explain the persistence of a particular 17 nucleotide sequence for 40 years in nature in this highly variable region of the poliovirus genome.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Poliomielitis
/
Variación Genética
/
ARN Viral
/
Brotes de Enfermedades
/
Poliovirus
Tipo de estudio:
Prognostic_studies
Límite:
Animals
/
Humans
País/Región como asunto:
Europa
Idioma:
En
Año:
1989
Tipo del documento:
Article