1EO8

INFLUENZA VIRUS HEMAGGLUTININ COMPLEXED WITH A NEUTRALIZING ANTIBODY


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural evidence for recognition of a single epitope by two distinct antibodies.

Fleury, D.Daniels, R.S.Skehel, J.J.Knossow, M.Bizebard, T.

(2000) Proteins 40: 572-578


  • PubMed Abstract: 
  • The structure of a complex between the hemagglutinin of influenza virus and the Fab of a neutralizing antibody was determined by X-ray crystallography at 2.8 A resolution. This antibody and another which has only 56% sequence identity bind to the sam ...

    The structure of a complex between the hemagglutinin of influenza virus and the Fab of a neutralizing antibody was determined by X-ray crystallography at 2.8 A resolution. This antibody and another which has only 56% sequence identity bind to the same epitope with very similar affinities and in the same orientation. One third of the interactions is conserved in the two complexes; a significant proportion of the interactions that differ are established by residues of the H3 complementarity-determining regions (CDR) which adopt distinct conformations in the two antibodies. This demonstrates that there is a definite flexibility in the selection of antibodies that bind to a given epitope, despite the high affinity of their complexes. This flexibility allows the humoral immune response to be redundant, a feature that may be useful in achieving longer lasting protection against evolving viral pathogens.


    Related Citations: 
    • Crystallization and Preliminary X-Ray Diffraction Studies of Complexes between an Influenza Hemagglutinin and Fab Fragments of Two Different Monoclonal Antibodies
      Gigant, B.,Fleury, D.,Bizebard, T.,Skehel, J.J.,Knossow, M.
      (1995) Proteins 23: 115
    • Structure of the Haemagglutinin Membrane Glycoprotein of Influenza Virus at 3 A Resolution
      Wilson, I.A.,Skehel, J.J.,Wiley, D.C.
      (1981) Nature 289: 366


    Organizational Affiliation

    Laboratoire d'Enzymologie et Biochimie Structurales, CNRS, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HEMAGGLUTININ (HA1 CHAIN)
A
328Influenza A virus (strain A/Aichi/2/1968 H3N2)Gene Names: HA
Find proteins for P03437 (Influenza A virus (strain A/Aichi/2/1968 H3N2))
Go to UniProtKB:  P03437
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
HEMAGGLUTININ (HA2 CHAIN)
B
175Influenza A virus (strain A/Aichi/2/1968 H3N2)Gene Names: HA
Find proteins for P03437 (Influenza A virus (strain A/Aichi/2/1968 H3N2))
Go to UniProtKB:  P03437
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
ANTIBODY (LIGHT CHAIN)
L
210N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
ANTIBODY (HEAVY CHAIN)
H
217N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MAN
Query on MAN

Download SDF File 
Download CCD File 
A
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, B
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.196 
  • Space Group: P 3 2 1
Unit Cell:
Length (Å)Angle (°)
a = 138.150α = 90.00
b = 138.150β = 90.00
c = 129.500γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
X-PLORrefinement
AMoREphasing
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-04-12
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance
  • Version 1.3: 2017-10-04
    Type: Refinement description