Article
Nuclear targeting of protein phosphatase-1 by HIV-1 Tat protein.
The Journal of biological chemistry - 28 Oct 2005
Ammosova Tatyana, Jerebtsova Marina, Beullens Monique, Lesage Bart, Jackson Angela, Kashanchi Fatah, Southerland William, Gordeuk Victor R, Bollen Mathieu, Nekhai Sergei
Abstract excerpt
Transcription of human immunodeficiency virus (HIV)-1 genes is activated by HIV-1 Tat protein, which induces phosphorylation of the C-terminal domain of RNA polymerase-II by CDK9/cyclin T1. We previously showed that Tat-induced HIV-1 transcription is regulated by protein phosphatase-1 (PP1). In the present study we demonstrate that Tat interacts with PP1 and that disruption of this interaction prevents induction...
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