1I9W

CRYSTAL STRUCTURE OF THE FUSION GLYCOPROTEIN E1 FROM SEMLIKI FOREST VIRUS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.344 
  • R-Value Work: 0.275 

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This is version 1.3 of the entry. See complete history


Literature

The Fusion glycoprotein shell of Semliki Forest virus: an icosahedral assembly primed for fusogenic activation at endosomal pH.

Lescar, J.Roussel, A.Wien, M.W.Navaza, J.Fuller, S.D.Wengler, G.Wengler, G.Rey, F.A.

(2001) Cell 105: 137-148

  • DOI: 10.1016/s0092-8674(01)00303-8
  • Primary Citation of Related Structures:  
    1I9W

  • PubMed Abstract: 
  • Semliki Forest virus (SFV) has been extensively studied as a model for analyzing entry of enveloped viruses into target cells. Here we describe the trace of the polypeptide chain of the SFV fusion glycoprotein, E1, derived from an electron density map at 3 ...

    Semliki Forest virus (SFV) has been extensively studied as a model for analyzing entry of enveloped viruses into target cells. Here we describe the trace of the polypeptide chain of the SFV fusion glycoprotein, E1, derived from an electron density map at 3.5 A resolution and describe its interactions at the surface of the virus. E1 is unexpectedly similar to the flavivirus envelope protein, with three structural domains disposed in the same primary sequence arrangement. These results introduce a new class of membrane fusion proteins which display lateral interactions to induce the necessary curvature and direct budding of closed particles. The resulting surface protein lattice is primed to cause membrane fusion when exposed to the acidic environment of the endosome.


    Organizational Affiliation

    Laboratoire de Génétique des Virus, CNRS-UPR 9053, 1, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
FUSION PROTEIN E1 A390Semliki Forest virusMutation(s): 0 
EC: 3.4.21.90
Find proteins for P03315 (Semliki forest virus)
Explore P03315 
Go to UniProtKB:  P03315
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.344 
  • R-Value Work: 0.275 
  • Space Group: P 64 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 79.46α = 90
b = 79.46β = 90
c = 334.76γ = 120
Software Package:
Software NamePurpose
MLPHAREphasing
CNSrefinement
DENZOdata reduction
CCP4data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-04-06
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-02-08
    Changes: Structure summary