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- W2345031133 abstract "Human immunodeficiency virus type 1 is known to use the transcriptional machinery of the host cell for viral gene transcription, and the only viral protein that partakes in this process is Tat, the viral trans-activator of transcription. During acute infection, the binding of Tat to the hairpin at the beginning of the transcribed viral RNA recruits the PTEFb complex, which in turn hyperphosphorylates RNA-polymerase II and stimulates transcription elongation. Along with acute infection, HIV-1 can also lead to latent infection that is characterized by a low level of viral transcription. During the maintenance and reversal of latency, there are no detectable amounts of Tat protein in the cell and the mechanism of transcription activation in the absence of Tat protein remains unclear. The latency maintenance is also a problematic question. It seems evident that cellular proteins with a yet unknown nature or role regulate both transcriptional repression in the latent phase and its activation during transition into the lytic phase. The present review discusses the role of cellular proteins Ku and HMGA1 in the initiation of transcription elongation of the HIV-1 provirus. The review presents data regarding Ku-mediated HIV-1 transcription and its dependence on the promoter structure and the shape of viral DNA. We also describe the differential influence of the HMGA1 protein on the induced and basal transcription of HIV-1. Finally, we offer possible mechanisms for Ku and HMGA1 proteins in the proviral transcription regulation." @default.
- W2345031133 created "2016-06-24" @default.
- W2345031133 creator A5008593767 @default.
- W2345031133 creator A5032705823 @default.
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- W2345031133 date "2016-03-15" @default.
- W2345031133 modified "2023-10-17" @default.
- W2345031133 title "Host Proteins Ku and HMGA1 As Participants of HIV-1 Transcription" @default.
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- W2345031133 doi "https://doi.org/10.32607/20758251-2016-8-1-34-47" @default.
- W2345031133 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4837570" @default.
- W2345031133 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/27099783" @default.
- W2345031133 hasPublicationYear "2016" @default.
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