1URZ

Low pH induced, membrane fusion conformation of the envelope protein of tick-borne encephalitis virus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.207 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of a Flavivirus Envelope Glycoprotein in its Low-Ph-Induced Membrane Fusion Conformation.

Bressanelli, S.Stiasny, K.Allison, S.L.Stura, E.A.Duquerroy, S.Lescar, J.Heinz, F.X.Rey, F.A.

(2004) EMBO J 23: 728

  • DOI: 10.1038/sj.emboj.7600064
  • Primary Citation of Related Structures:  
    1URZ

  • PubMed Abstract: 
  • Enveloped viruses enter cells via a membrane fusion reaction driven by conformational changes of specific viral envelope proteins. We report here the structure of the ectodomain of the tick-borne encephalitis virus envelope glycoprotein, E, a prototypical class II fusion protein, in its trimeric low-pH-induced conformation ...

    Enveloped viruses enter cells via a membrane fusion reaction driven by conformational changes of specific viral envelope proteins. We report here the structure of the ectodomain of the tick-borne encephalitis virus envelope glycoprotein, E, a prototypical class II fusion protein, in its trimeric low-pH-induced conformation. We show that, in the conformational transition, the three domains of the neutral-pH form are maintained but their relative orientation is altered. Similar to the postfusion class I proteins, the subunits rearrange such that the fusion peptide loops cluster at one end of an elongated molecule and the C-terminal segments, connecting to the viral transmembrane region, run along the sides of the trimer pointing toward the fusion peptide loops. Comparison with the low-pH-induced form of the alphavirus class II fusion protein reveals striking differences at the end of the molecule bearing the fusion peptides, suggesting an important conformational effect of the missing membrane connecting segment.


    Organizational Affiliation

    Virologie Moléculaire & Structurale, CNRS UMR 2472/INRA UMR 1157, IFR 115 Gif-sur-Yvette, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ENVELOPE PROTEINA, B, C, D, E, F401Tick-borne encephalitis virus (WESTERN SUBTYPE)Mutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for Q80E47 (Tick-borne encephalitis virus)
Explore Q80E47 
Go to UniProtKB:  Q80E47
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.207 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 121.5α = 90
b = 142.9β = 90
c = 173.6γ = 90
Software Package:
Software NamePurpose
CNSrefinement
XDSdata reduction
XSCALEdata scaling
MOLREPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-01-29
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance