The 5' and 3' ends of alphavirus RNAs--Non-coding is not non-functional.
Virus Res
; 206: 99-107, 2015 Aug 03.
Article
en En
| MEDLINE
| ID: mdl-25630058
ABSTRACT
The non-coding regions found at the 5' and 3' ends of alphavirus genomes regulate viral gene expression, replication, translation and virus-host interactions, which have significant implications for viral evolution, host range, and pathogenesis. The functions of these non-coding regions are mediated by a combination of linear sequence and structural elements. The capped 5' untranslated region (UTR) contains promoter elements, translational regulatory sequences that modulate dependence on cellular translation factors, and structures that help to avoid innate immune defenses. The polyadenylated 3' UTR contains highly conserved sequence elements for viral replication, binding sites for cellular miRNAs that determine cell tropism, host range, and pathogenesis, and conserved binding regions for a cellular protein that influences viral RNA stability. Nonetheless, there are additional conserved elements in non-coding regions of the virus (e.g., the repeated sequence elements in the 3' UTR) whose function remains obscure. Thus, key questions remain as to the function of these short yet influential untranslated segments of alphavirus RNAs.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Replicación Viral
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ARN Viral
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Regulación Viral de la Expresión Génica
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Alphavirus
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Regiones no Traducidas 3'
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Regiones no Traducidas 5'
Idioma:
En
Revista:
Virus Res
Asunto de la revista:
VIROLOGIA
Año:
2015
Tipo del documento:
Article