3N44

Crystal structure of the mature envelope glycoprotein complex (trypsin cleavage; Osmium soak) of Chikungunya virus.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.231 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Glycoprotein organization of Chikungunya virus particles revealed by X-ray crystallography.

Voss, J.E.Vaney, M.C.Duquerroy, S.Vonrhein, C.Girard-Blanc, C.Crublet, E.Thompson, A.Bricogne, G.Rey, F.A.

(2010) Nature 468: 709-712

  • DOI: 10.1038/nature09555
  • Primary Citation of Related Structures:  
    2XFB, 2XFC, 3N41, 3N42, 3N43, 3N44, 3N40

  • PubMed Abstract: 
  • Chikungunya virus (CHIKV) is an emerging mosquito-borne alphavirus that has caused widespread outbreaks of debilitating human disease in the past five years. CHIKV invasion of susceptible cells is mediated by two viral glycoproteins, E1 and E2, which carry the main antigenic determinants and form an icosahedral shell at the virion surface ...

    Chikungunya virus (CHIKV) is an emerging mosquito-borne alphavirus that has caused widespread outbreaks of debilitating human disease in the past five years. CHIKV invasion of susceptible cells is mediated by two viral glycoproteins, E1 and E2, which carry the main antigenic determinants and form an icosahedral shell at the virion surface. Glycoprotein E2, derived from furin cleavage of the p62 precursor into E3 and E2, is responsible for receptor binding, and E1 for membrane fusion. In the context of a concerted multidisciplinary effort to understand the biology of CHIKV, here we report the crystal structures of the precursor p62-E1 heterodimer and of the mature E3-E2-E1 glycoprotein complexes. The resulting atomic models allow the synthesis of a wealth of genetic, biochemical, immunological and electron microscopy data accumulated over the years on alphaviruses in general. This combination yields a detailed picture of the functional architecture of the 25 MDa alphavirus surface glycoprotein shell. Together with the accompanying report on the structure of the Sindbis virus E2-E1 heterodimer at acidic pH (ref. 3), this work also provides new insight into the acid-triggered conformational change on the virus particle and its inbuilt inhibition mechanism in the immature complex.


    Related Citations: 
    • Structure and interactions at the viral surface of the envelope protein E1 of Semliki Forest virus.
      Roussel, A., Lescar, J., Vaney, M.C., Wengler, G., Rey, F.A.
      (2006) Structure 14: 75
    • Conformational change and protein-protein interactions of the fusion protein of Semliki Forest virus.
      Gibbons, D.L., Vaney, M.C., Roussel, A., Vigouroux, A., Reilly, B., Lepault, J., Kielian, M., Rey, F.A.
      (2004) Nature 427: 320
    • 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., Rey, F.A.
      (2001) Cell 105: 137
    • Structural Changes of Envelope Proteins During Alphavirus Fusion.
      Li, L., Jose, J., Xiang, Y., Kuhn, R.J., Rossmann, M.G.
      () To be published --: --

    Organizational Affiliation

    Institut Pasteur, Département de Virologie, Unité de Virologie Structurale, 25 rue du Dr Roux, 75724 Paris Cedex 15, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
E3 envelope glycoproteinA65Chikungunya virusMutation(s): 0 
EC: 3.4.21.90
UniProt
Find proteins for Q1H8W5 (Chikungunya virus)
Explore Q1H8W5 
Go to UniProtKB:  Q1H8W5
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
E2 envelope glycoproteinB360Chikungunya virusMutation(s): 0 
EC: 3.4.21.90
UniProt
Find proteins for Q1H8W5 (Chikungunya virus)
Explore Q1H8W5 
Go to UniProtKB:  Q1H8W5
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
E1 envelope glycoproteinC [auth F]473Chikungunya virusMutation(s): 0 
EC: 3.4.21.90
UniProt
Find proteins for Q1H8W5 (Chikungunya virus)
Explore Q1H8W5 
Go to UniProtKB:  Q1H8W5
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.231 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.089α = 90
b = 89.954β = 90
c = 174.018γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
PHASERphasing
BUSTERrefinement
XDSdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-12-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Database references, Derived calculations, Structure summary