共 72 条
Human immunodeficiency virus type I Vif protein is packaged into the nucleoprotein complex through an interaction with viral genomic RNA
被引:111
作者:

Khan, MA
论文数: 0 引用数: 0
h-index: 0
机构: NIAID, Viral Biochem Sect, Mol Microbiol Lab, NIH, Bethesda, MD 20892 USA

Aberham, C
论文数: 0 引用数: 0
h-index: 0
机构: NIAID, Viral Biochem Sect, Mol Microbiol Lab, NIH, Bethesda, MD 20892 USA

Kao, S
论文数: 0 引用数: 0
h-index: 0
机构: NIAID, Viral Biochem Sect, Mol Microbiol Lab, NIH, Bethesda, MD 20892 USA

Akari, H
论文数: 0 引用数: 0
h-index: 0
机构: NIAID, Viral Biochem Sect, Mol Microbiol Lab, NIH, Bethesda, MD 20892 USA

Gorelick, R
论文数: 0 引用数: 0
h-index: 0
机构: NIAID, Viral Biochem Sect, Mol Microbiol Lab, NIH, Bethesda, MD 20892 USA

Bour, S
论文数: 0 引用数: 0
h-index: 0
机构: NIAID, Viral Biochem Sect, Mol Microbiol Lab, NIH, Bethesda, MD 20892 USA

Strebel, K
论文数: 0 引用数: 0
h-index: 0
机构: NIAID, Viral Biochem Sect, Mol Microbiol Lab, NIH, Bethesda, MD 20892 USA
机构:
[1] NIAID, Viral Biochem Sect, Mol Microbiol Lab, NIH, Bethesda, MD 20892 USA
[2] NCI, SAIC Frederick, AIDS Vaccine Program, Frederick, MD 21701 USA
关键词:
D O I:
10.1128/JVI.75.16.7252-7265.2001
中图分类号:
Q93 [微生物学];
学科分类号:
071005 ;
100705 ;
摘要:
The human immunodeficiency virus type 1 (HIV-1) Vif protein plays a critical role in the production of infectious virions. Previous studies have demonstrated the presence of small amounts of Vif in virus particles. However, Vif packaging was assumed to be nonspecific, and its functional significance has been questioned. We now report that packaging of Vif is dependent on the packaging of viral genomic RNA in both permissive and restrictive HIV-1 target cells. Mutations in the nucleocapsid zinc finger domains that abrogate packaging of viral genomic RNA abolished packaging of Vif. Additionally, an RNA packaging-defective virus exhibited significantly reduced packaging of Vif. Finally, deletion of a putative RNA-interacting domain in Vif abolished packaging of Vif into virions. Virion-associated Vif was resistant to detergent extraction and copurified with components of the viral nucleoprotein complex and functional reverse transcription complexes. Thus, Vif is specifically packaged into virions as a component of the viral nucleoprotein complex. Our data suggest that the specific association of Vif with the viral nucleoprotein complex might be functionally significant and could be a critical requirement for infectivity of viruses produced from restrictive host cells.
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页码:7252 / 7265
页数:14
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