1I9W

CRYSTAL STRUCTURE OF THE FUSION GLYCOPROTEIN E1 FROM SEMLIKI FOREST VIRUS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.344 
  • R-Value Work: 0.275 

wwPDB Validation 3D Report Full Report


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

  • Also Cited By: 2ALA, 3N40, 3N41, 3N42, 3N43, 3N44, 4ADG, 4ADI, 4ADJ, 4B3V

  • 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 ma ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FUSION PROTEIN E1
A
390Semliki forest virusEC: 3.4.21.90
Find proteins for P03315 (Semliki forest virus)
Go to UniProtKB:  P03315
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.344 
  • R-Value Work: 0.275 
  • Space Group: P 64 2 2
Unit Cell:
Length (Å)Angle (°)
a = 79.460α = 90.00
b = 79.460β = 90.00
c = 334.760γ = 120.00
Software Package:
Software NamePurpose
DENZOdata reduction
MLPHAREphasing
CCP4data scaling
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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