Labeling of multiple HIV-1 proteins with the biarsenical-tetracysteine system.

Labeling of multiple HIV-1 proteins with the biarsenical-tetracysteine system.
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DOI:
10.1371/journal.pone.0017016
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发表时间:
2011-02-11
期刊:
影响因子:
3.7
通讯作者:
Mak J
Mak J
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Pereira CF;Ellenberg PC;Jones KL;Fernandez TL;Smyth RP;Hawkes DJ;Hijnen M;Vivet-Boudou V;Marquet R;Johnson I;Mak J

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Due to its small size and versatility, the biarsenical-tetracysteine system is an attractive way to label viral proteins for live cell imaging. This study describes the genetic labeling of the human immunodeficiency virus type 1 (HIV-1) structural proteins (matrix, capsid and nucleocapsid), enzymes (protease, reverse transcriptase, RNAse H and integrase) and envelope glycoprotein 120 with a tetracysteine tag in the context of a full-length virus. We measure the impact of these modifications on the natural virus infection and, most importantly, present the first infectious HIV-1 construct containing a fluorescently-labeled nucleocapsid protein. Furthermore, due to the high background levels normally associated with the labeling of tetracysteine-tagged proteins we have also optimized a metabolic labeling system that produces infectious virus containing the natural envelope glycoproteins and specifically labeled tetracysteine-tagged proteins that can easily be detected after virus infection of T-lymphocytes. This approach can be adapted to other viral systems for the visualization of the interplay between virus and host cell during infection.
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