4WE5

The crystal structure of hemagglutinin from A/Port Chalmers/1/1973 influenza virus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 

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This is version 2.1 of the entry. See complete history


Literature

Structure and receptor binding preferences of recombinant human A(H3N2) virus hemagglutinins.

Yang, H.Carney, P.J.Chang, J.C.Guo, Z.Villanueva, J.M.Stevens, J.

(2015) Virology 477C: 18-31

  • DOI: https://doi.org/10.1016/j.virol.2014.12.024
  • Primary Citation of Related Structures:  
    4WE4, 4WE5, 4WE6, 4WE7, 4WE8, 4WE9, 4WEA

  • PubMed Abstract: 

    A(H3N2) influenza viruses have circulated in humans since 1968, and antigenic drift of the hemagglutinin (HA) protein continues to be a driving force that allows the virus to escape the human immune response. Since the major antigenic sites of the HA overlap into the receptor binding site (RBS) of the molecule, the virus constantly struggles to effectively adapt to host immune responses, without compromising its functionality. Here, we have structurally assessed the evolution of the A(H3N2) virus HA RBS, using an established recombinant expression system. Glycan binding specificities of nineteen A(H3N2) influenza virus HAs, each a component of the seasonal influenza vaccine between 1968 and 2012, were analyzed. Results suggest that while its receptor-binding site has evolved from one that can bind a broad range of human receptor analogs to one with a more restricted binding profile for longer glycans, the virus continues to circulate and transmit efficiently among humans.


  • Organizational Affiliation

    Influenza Division, National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, GA 30333, USA.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Hemagglutinin HA1 chain328Influenza A virus (A/Port Chalmers/1/1973(H3N2))Mutation(s): 0 
Gene Names: HA
UniProt
Find proteins for Q1PUD9 (Influenza A virus (strain A/Port Chalmers/1/1973 H3N2))
Explore Q1PUD9 
Go to UniProtKB:  Q1PUD9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ1PUD9
Glycosylation
Glycosylation Sites: 4
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Hemagglutinin HA2 chain181Influenza A virus (A/Port Chalmers/1/1973(H3N2))Mutation(s): 0 
Gene Names: HA
UniProt
Find proteins for Q1PUD9 (Influenza A virus (strain A/Port Chalmers/1/1973 H3N2))
Explore Q1PUD9 
Go to UniProtKB:  Q1PUD9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ1PUD9
Sequence Annotations
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 3
MoleculeChains Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
C, D
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G15407YE
GlyCosmos:  G15407YE
GlyGen:  G15407YE
Entity ID: 4
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
E
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 
  • Space Group: I 21 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 153.128α = 90
b = 153.128β = 90
c = 153.128γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-02-11
    Type: Initial release
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Other, Refinement description, Source and taxonomy, Structure summary
  • Version 2.1: 2023-12-27
    Changes: Advisory, Data collection, Database references, Structure summary