2LK9

Structure of BST-2/Tetherin Transmembrane Domain


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

HIV-1 Vpu Protein Antagonizes Innate Restriction Factor BST-2 via Lipid-embedded Helix-Helix Interactions.

Skasko, M.Wang, Y.Tian, Y.Tokarev, A.Munguia, J.Ruiz, A.Stephens, E.B.Opella, S.J.Guatelli, J.

(2012) J.Biol.Chem. 287: 58-67

  • DOI: 10.1074/jbc.M111.296772

  • PubMed Abstract: 
  • The Vpu protein of HIV-1 antagonizes BST-2 (tetherin), a broad spectrum effector of the innate immune response to viral infection, by an intermolecular interaction that maps genetically to the α-helical transmembrane domains (TMDs) of each protein. H ...

    The Vpu protein of HIV-1 antagonizes BST-2 (tetherin), a broad spectrum effector of the innate immune response to viral infection, by an intermolecular interaction that maps genetically to the α-helical transmembrane domains (TMDs) of each protein. Here we utilize NMR spectroscopy to describe key features of the helix-helix pairing that underlies this interaction. The antagonism of BST-2 involves a sequence of three alanines and a tryptophan spaced at four residue intervals within the Vpu TMD helix. Responsiveness to Vpu involves bulky hydrophobic residues in the C-terminal region of the BST-2 TMD helix that likely fit between the alanines on the interactive face of Vpu. These aspects of Vpu and BST-2 form an anti-parallel, lipid-embedded helix-helix interface. Changes in human BST-2 that mimic sequences found in nonhuman primate orthologs unresponsive to Vpu change the tilt angle of the TMD in the lipid bilayer without abrogating its intrinsic ability to interact with Vpu. These data explain the mechanism by which HIV-1 evades a key aspect of innate immunity and the species specificity of Vpu using an anti-parallel helix-helix packing model.


    Organizational Affiliation

    Department of Medicine, University of California, San Diego, La Jolla, CA 92093, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Bone marrow stromal antigen 2
A
35Homo sapiensMutation(s): 1 
Gene Names: BST2
Find proteins for Q10589 (Homo sapiens)
Go to Gene View: BST2
Go to UniProtKB:  Q10589
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-11-09
    Type: Initial release
  • Version 1.1: 2012-01-18
    Type: Database references