Identification and mapping of inhibitory sequences in the human immunodeficiency virus type 2 vif gene.
J Virol
; 69(8): 5167-70, 1995 Aug.
Article
em En
| MEDLINE
| ID: mdl-7609089
ABSTRACT
Human immunodeficiency virus (HIV) regulates the expression of its genes temporally at the mRNA processing step. A subset of the mRNA species which encode the structural and some accessory genes contains inhibitory sequences (INS or CRS elements) which prevent nuclear export of the RNA or its utilization in the cytoplasm. Such inhibition is overridden by the interaction of a viral protein, Rev, with its RNA target sequence, RRE. The vif gene product, which is essential for virus replication in vivo, is encoded by a singly spliced mRNA, and its expression is dependent on rev in infected cells. However, INS elements have not been found in the HIV-1 vif gene itself, although such elements have been observed in Gag, Pol, and Env coding sequences. We have now identified an INS within the 5' half of HIV-2 vif which does not show any homology with cellular mRNAs or other previously identified INS and CRS elements of HIV. These results suggest that retroviral mRNAs have novel labile sequences different from those of cellular mRNAs.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Regulação Viral da Expressão Gênica
/
Genes vif
/
HIV-2
Tipo de estudo:
Diagnostic_studies
Limite:
Humans
Idioma:
En
Revista:
J Virol
Ano de publicação:
1995
Tipo de documento:
Article
País de afiliação:
Estados Unidos