4CR0

Crystal Structure of H5 (VN1194) Asn186Lys/Gly143Arg Mutant Haemagglutinin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.225 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Enhanced Human Receptor Binding by H5 Haemagglutinins.

Xiong, X.Xiao, H.Martin, S.R.Coombs, P.J.Liu, J.Collins, P.J.Vachieri, S.G.Walker, P.A.Lin, Y.P.Mccauley, J.W.Gamblin, S.J.Skehel, J.J.

(2014) Virology 456: 179

  • DOI: 10.1016/j.virol.2014.03.008
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Mutant H5N1 influenza viruses have been isolated from humans that have increased human receptor avidity. We have compared the receptor binding properties of these mutants with those of wild-type viruses, and determined the structures of their haemagg ...

    Mutant H5N1 influenza viruses have been isolated from humans that have increased human receptor avidity. We have compared the receptor binding properties of these mutants with those of wild-type viruses, and determined the structures of their haemagglutinins in complex with receptor analogues. Mutants from Vietnam bind tighter to human receptor by acquiring basic residues near the receptor binding site. They bind more weakly to avian receptor because they lack specific interactions between Asn-186 and Gln-226. In contrast, a double mutant, Δ133/Ile155Thr, isolated in Egypt has greater avidity for human receptor while retaining wild-type avidity for avian receptor. Despite these increases in human receptor binding, none of the mutants prefers human receptor, unlike aerosol transmissible H5N1 viruses. Nevertheless, mutants with high avidity for both human and avian receptors may be intermediates in the evolution of H5N1 viruses that could infect both humans and poultry.


    Organizational Affiliation

    MRC National Institute for Medical Research, The Ridgeway, Mill Hill, London NW7 1AA, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Hemagglutinin HA1
A
326Influenza A virusMutation(s): 0 
Gene Names: HA
Find proteins for Q6DQ34 (Influenza A virus)
Go to UniProtKB:  Q6DQ34
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Hemagglutinin HA2
B
166Influenza A virusMutation(s): 0 
Gene Names: HA
Find proteins for Q6DQ34 (Influenza A virus)
Go to UniProtKB:  Q6DQ34
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
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: 2.65 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.225 
  • Space Group: P 63
Unit Cell:
Length (Å)Angle (°)
a = 77.950α = 90.00
b = 77.950β = 90.00
c = 210.411γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
PHASERphasing
SCALAdata scaling
xia2data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-05-28
    Type: Initial release
  • Version 1.1: 2014-06-11
    Type: Database references
  • Version 1.2: 2018-11-07
    Type: Data collection, Database references, Source and taxonomy, Structure summary