5XL1

The structure of hemagglutinin from an avian-origin H4N6 influenza virus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.191 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Avian-to-Human Receptor-Binding Adaptation by Influenza A Virus Hemagglutinin H4

Song, H.Qi, J.Xiao, H.Bi, Y.Zhang, W.Xu, Y.Wang, F.Shi, Y.Gao, G.F.

(2017) Cell Rep 20: 1201-1214

  • DOI: 10.1016/j.celrep.2017.07.028
  • Primary Citation of Related Structures:  
    5XLB, 5XLA, 5XLD, 5XLC, 5XL9, 5XL2, 5XL1, 5XL4, 5XL3, 5XL6

  • PubMed Abstract: 
  • Low-pathogenicity avian influenza viruses (LPAIVs) have caused a global concern to public health since the first novel LPAIV H7N9 outbreak occurred. The receptor-binding properties of the viral hemagglutinin are one key factor for efficient transmiss ...

    Low-pathogenicity avian influenza viruses (LPAIVs) have caused a global concern to public health since the first novel LPAIV H7N9 outbreak occurred. The receptor-binding properties of the viral hemagglutinin are one key factor for efficient transmission and infection in humans. Recent evidence shows that H4 subtype viruses have been widely circulating in domestic poultry and human asymptomatic infections might have occurred. Here, we evaluated the receptor-binding properties of two representative isolates, avian H4N6 (containing Q226 and G228) and swine H4N6 (containing L226 and S228), and found that the avian isolate preferentially binds to avian receptors, whereas the swine isolate preferentially binds to human receptors. The Q226L and G228S substitutions are pivotal for the receptor-binding switch, which resulted in similar human receptor-binding features to the pandemic H2 and H3, implying that H4 has the potential to cause human infections. This early-warning study calls for future extensive surveillance.


    Organizational Affiliation

    Research Network of Immunity and Health (RNIH), Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing 100101, China; CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; Laboratory of Protein Engineering and Vaccines, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China; Center for Influenza Research and Early-Warning (CASCIRE), Chinese Academy of Sciences, Beijing 100101, China; School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China; Savaid Medical School, University of Chinese Academy of Sciences, Beijing 101408, China; National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC), Beijing 102206, China. Electronic address: gaof@im.ac.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HemagglutininA, B327Influenza A virus (A/duck/Czechoslovakia/1956(H4N6))Mutation(s): 0 
Gene Names: HA
Find proteins for P19696 (Influenza A virus (strain A/Duck/Czechoslovakia/1956 H4N6))
Explore P19696 
Go to UniProtKB:  P19696
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HemagglutininC, D176Influenza A virus (A/duck/Czechoslovakia/1956(H4N6))Mutation(s): 0 
Gene Names: HA
Find proteins for P19696 (Influenza A virus (strain A/Duck/Czechoslovakia/1956 H4N6))
Explore P19696 
Go to UniProtKB:  P19696
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download CCD File 
A, B
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.191 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 100.476α = 90
b = 100.476β = 90
c = 685.126γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-08-02
    Type: Initial release
  • Version 1.1: 2017-08-16
    Changes: Database references
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary