4CQW

H5 (tyTy) Del133/Ile155Thr Mutant Haemagglutinin in Complex with Avian Receptor Analogue 3'SLN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 

wwPDB Validation   3D Report Full Report



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:  
    5AJM, 4CQZ, 4CQR, 4CQS, 4CQU, 4CQV, 4CQW, 4CQX, 4CQY, 4CR0

  • 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. Electronic address: skeheljj@nimr.mrc.ac.uk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HAEMAGGLUTININ HA1ACE327Influenza A virus (A/turkey/Turkey/1/2005(H5N1))Mutation(s): 1 
Gene Names: HA
Find proteins for Q207Z6 (Influenza A virus)
Explore Q207Z6 
Go to UniProtKB:  Q207Z6
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HAEMAGGLUTININ HA2BDF166Influenza A virus (A/turkey/Turkey/1/2005(H5N1))Mutation(s): 0 
Gene Names: HA
Find proteins for Q207Z6 (Influenza A virus)
Explore Q207Z6 
Go to UniProtKB:  Q207Z6
Protein Feature View
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 3
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
N-acetyl-alpha-neuraminic acid-(2-3)-beta-D-galactopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
G, H, I
3 N/A Oligosaccharides Interaction
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 3
IDChainsNameType/Class2D Diagram3D Interactions
PRD_900067
Query on PRD_900067
G, H, I3'-sialyl-N-acetyllactosamineOligosaccharide /  Substrate analog

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 87.635α = 90
b = 117.552β = 92.5
c = 101.16γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
xia2data reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-05-28
    Type: Initial release
  • Version 1.1: 2014-06-11
    Changes: Database references
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Other, Structure summary