4CQY

H5 (tyTy) Del133/Ile155Thr Mutant Haemagglutinin in Complex with Avian Receptor Analogue LSTa


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.1 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
HAEMAGGLUTININ HA1
A, C, E
327Influenza A virusMutation(s): 1 
Gene Names: HA
Find proteins for Q207Z6 (Influenza A virus)
Go to UniProtKB:  Q207Z6
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
HAEMAGGLUTININ HA2
B, D, F
166Influenza A virusMutation(s): 0 
Gene Names: HA
Find proteins for Q207Z6 (Influenza A virus)
Go to UniProtKB:  Q207Z6
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
C, E
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
GAL
Query on GAL

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Download CCD File 
A, C, E
BETA-D-GALACTOSE
C6 H12 O6
WQZGKKKJIJFFOK-FPRJBGLDSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, C, E
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
SIA
Query on SIA

Download SDF File 
Download CCD File 
A, C, E
O-SIALIC ACID
C11 H19 N O9
SQVRNKJHWKZAKO-YRMXFSIDSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.193 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 89.000α = 90.00
b = 116.350β = 91.69
c = 101.840γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALAdata scaling
xia2data reduction
PHASERphasing

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