2X7A

Structural basis of HIV-1 tethering to membranes by the Bst2-tetherin ectodomain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.77 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.236 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Basis of HIV-1 Tethering to Membranes by the Bst-2/Tetherin Ectodomain.

Hinz, A.Miguet, N.Natrajan, G.Usami, Y.Yamanaka, H.Renesto, P.Hartlieb, B.Mccarthy, A.A.Simorre, J.P.Gottlinger, H.Weissenhorn, W.

(2010) Cell Host Microbe 7: 314

  • DOI: 10.1016/j.chom.2010.03.005

  • PubMed Abstract: 
  • The restriction factor BST-2/tetherin contains two membrane anchors employed to retain some enveloped viruses, including HIV-1 tethered to the plasma membrane in the absence of virus-encoded antagonists. The 2.77 A crystal structure of the BST-2/teth ...

    The restriction factor BST-2/tetherin contains two membrane anchors employed to retain some enveloped viruses, including HIV-1 tethered to the plasma membrane in the absence of virus-encoded antagonists. The 2.77 A crystal structure of the BST-2/tetherin extracellular core presented here reveals a parallel 90 A long disulfide-linked coiled-coil domain, while the complete extracellular domain forms an extended 170 A long rod-like structure based on small-angle X-ray scattering data. Mutagenesis analyses indicate that both the coiled coil and the N-terminal region are required for retention of HIV-1, suggesting that the elongated structure can function as a molecular ruler to bridge long distances. The structure reveals substantial irregularities and instabilities throughout the coiled coil, which contribute to its low stability in the absence of disulfide bonds. We propose that the irregular coiled coil provides conformational flexibility, ensuring that BST-2/tetherin anchoring both in the plasma membrane and in the newly formed virus membrane is maintained during virus budding.


    Organizational Affiliation

    Unit of Virus Host Cell Interactions (UVHCI) UMI 3265 Université Joseph Fourier-EMBL-CNRS, 38042 Grenoble, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
BONE MARROW STROMAL ANTIGEN 2
A, B, C, D, E, F, G, H, I, J, K
61Homo sapiensMutation(s): 0 
Gene Names: BST2
Find proteins for Q10589 (Homo sapiens)
Go to Gene View: BST2
Go to UniProtKB:  Q10589
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

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Download CCD File 
B, D, F, G, H, I, J
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

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Download CCD File 
B, E, F, G, H, J
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
GOL
Query on GOL

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Download CCD File 
G
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

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Download CCD File 
I
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D, E, F, G, H, I, J, K
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.77 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.236 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 169.890α = 90.00
b = 85.930β = 126.94
c = 123.310γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
SCALAdata scaling
XDSdata reduction
SHARPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-04-28
    Type: Initial release
  • Version 1.1: 2011-06-02
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance