3MQ9

Crystal Structure of Ectodomain Mutant of BST-2/Tetherin/CD317 Fused to MBP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.231 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural insight into the mechanisms of enveloped virus tethering by tetherin.

Yang, H.Wang, J.Jia, X.McNatt, M.W.Zang, T.Pan, B.Meng, W.Wang, H.W.Bieniasz, P.D.Xiong, Y.

(2010) Proc.Natl.Acad.Sci.USA 107: 18428-18432

  • DOI: 10.1073/pnas.1011485107
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Tetherin/BST2 is a type-II membrane protein that inhibits the release of a range of enveloped viruses, including HIV-1. Here we report three crystal structures of human tetherin, including the full-length ectodomain, a triple cysteine mutant and an e ...

    Tetherin/BST2 is a type-II membrane protein that inhibits the release of a range of enveloped viruses, including HIV-1. Here we report three crystal structures of human tetherin, including the full-length ectodomain, a triple cysteine mutant and an ectodomain truncation. These structures show that tetherin forms a continuous alpha helix encompassing almost the entire ectodomain. Tetherin helices dimerize into parallel coiled coils via interactions throughout the C-terminal portion of the ectodomain. A comparison of the multiple structures of the tetherin dimer reveals inherent constrained flexibility at two hinges positioned at residues A88 and G109. In the crystals, two tetherin ectodomain dimers associate into a tetramer by forming an antiparallel four-helix bundle at their N termini. However, mutagenesis studies suggest that the tetrametric form of tetherin, although potentially contributing to, is not essential for its antiviral activity. Nonetheless, the structural and chemical properties of the N terminus of the ectodomain are important for optimal tethering function. This study provides detailed insight into the mechanisms by which this broad-spectrum antiviral restriction factor can function.


    Organizational Affiliation

    Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06520-8114, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Bone marrow stromal antigen 2 fused to Maltose-binding periplasmic protein
A, B, C, D, E, F, G, H
471Homo sapiensEscherichia coli (strain K12)
This entity is chimeric
Mutation(s): 1 
Gene Names: BST2, malE
Find proteins for Q10589 (Homo sapiens)
Go to Gene View: BST2
Go to UniProtKB:  Q10589
Find proteins for P0AEX9 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AEX9
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D, E, F, G, H
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.231 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 94.502α = 90.00
b = 202.443β = 90.41
c = 107.277γ = 90.00
Software Package:
Software NamePurpose
ADSCdata collection
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-10-27
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-08-16
    Type: Refinement description, Source and taxonomy