1HTM

STRUCTURE OF INFLUENZA HAEMAGGLUTININ AT THE PH OF MEMBRANE FUSION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.222 

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This is version 1.2 of the entry. See complete history


Literature

Structure of influenza haemagglutinin at the pH of membrane fusion.

Bullough, P.A.Hughson, F.M.Skehel, J.J.Wiley, D.C.

(1994) Nature 371: 37-43

  • DOI: 10.1038/371037a0
  • Primary Citation of Related Structures:  
    1HTM

  • PubMed Abstract: 
  • Low pH induces a conformational change in the influenza virus haemagglutinin, which then mediates fusion of the viral and host cell membranes. The three-dimensional structure of a fragment of the haemagglutinin in this conformation reveals a major re ...

    Low pH induces a conformational change in the influenza virus haemagglutinin, which then mediates fusion of the viral and host cell membranes. The three-dimensional structure of a fragment of the haemagglutinin in this conformation reveals a major refolding of the secondary and tertiary structure of the molecule. The apolar fusion peptide moves at least 100 A to one tip of the molecule. At the other end a helical segment unfolds, a subdomain relocates reversing the chain direction, and part of the structure becomes disordered.


    Related Citations: 
    • Crystals of a Fragment of Influenza Haemagglutinin in the Low Ph Induced Conformation
      Bullough, P.A., Hughson, F.M., Treharne, A.C., Ruigrok, R.W.H., Skehel, J.J., Wiley, D.C.
      (1994) J Mol Biol 236: 1262
    • Refinement of the Influenza Virus Hemagglutinin by Simulated Annealing
      Weis, W.I., Brunger, A.T., Skehel, J.J., Wiley, D.C.
      (1990) J Mol Biol 212: 737
    • Studies on the Structure of the Influenza Virus Haemagglutinin at the Ph of Membrane Fusion
      Ruigrok, R.W.H., Aitken, A., Calder, L.J., Martin, S.R., Skehel, J.J., Wharton, S.A., Weis, W., Wiley, D.C.
      (1988) J Gen Virol 69: 2785
    • Analyses of the Antigenicity of Influenza Haemagglutinin at the Ph Optimum for Virus-Mediated Membrane Fusion
      Daniels, R.S., Douglas, A.R., Skehel, J.J.
      (1983) J Gen Virol 64: 1264
    • Changes in the Conformation of Influenza Virus Hemagglutinin at the Ph Optimum of Virus-Mediated Membrane Fusion
      Skehel, J.J., Bayley, P.M., Brown, E.B., Martin, S.R., Waterfield, M.D., White, J.M., Wilson, I.A., Wiley, D.C.
      (1982) Proc Natl Acad Sci U S A 79: 93
    • Structure of the Haemagglutinin Membrane Glycoprotein of Influenza Virus at 3 Angstroms Resolution
      Wilson, I.A., Skehel, J.J., Wiley, D.C.
      (1981) Nature 289: 366

    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Harvard University, Cambridge, Massachusetts 02138.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HEMAGGLUTININ HA1 CHAINACE27uncultured beta proteobacterium UMTRA-608Mutation(s): 0 
Find proteins for P03437 (Influenza A virus (strain A/Aichi/2/1968 H3N2))
Explore P03437 
Go to UniProtKB:  P03437
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HEMAGGLUTININ HA2 CHAINBDF138uncultured beta proteobacterium UMTRA-608Mutation(s): 0 
Find proteins for P03437 (Influenza A virus (strain A/Aichi/2/1968 H3N2))
Explore P03437 
Go to UniProtKB:  P03437
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.222 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 168.7α = 90
b = 231.7β = 90
c = 53.8γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1995-02-14
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance