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J Virol. 2016 Nov 14;90(23):10701-10714. doi: 10.1128/JVI.01465-16. Print 2016 Dec 01.

Tetherin Antagonism by HIV-1 Group M Nef Proteins.

Journal of virology

Juan F Arias, Marta Colomer-Lluch, Benjamin von Bredow, Justin M Greene, Julie MacDonald, David H O'Connor, Ruth Serra-Moreno, David T Evans

Affiliations

  1. Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA.
  2. Department of Biological Sciences, College of Arts and Sciences, Texas Tech University, Lubbock, Texas, USA.
  3. Oregon Health & Science University, Portland, Oregon, USA.
  4. Wisconsin National Primate Research Center, University of Wisconsin-Madison, Madison, Wisconsin, USA.
  5. Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA [email protected].

PMID: 27654287 PMCID: PMC5110183 DOI: 10.1128/JVI.01465-16

Abstract

Although Nef is the viral gene product used by most simian immunodeficiency viruses to overcome restriction by tetherin, this activity was acquired by the Vpu protein of HIV-1 group M due to the absence of sequences in human tetherin that confer susceptibility to Nef. Thus, it is widely accepted that HIV-1 group M uses Vpu instead of Nef to counteract tetherin. Challenging this paradigm, we identified Nef alleles of HIV-1 group M isolates with significant activity against human tetherin. These Nef proteins promoted virus release and tetherin downmodulation from the cell surface and, in the context of

Copyright © 2016, American Society for Microbiology. All Rights Reserved.

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