4LKJ

The structure of hemagglutinin L226Q mutant (H3 numbering) from a avian-origin H7N9 influenza virus (A/Anhui/1/2013) in complex with avian receptor analog 3'SLNLN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.239 

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Literature

Structures and receptor binding of hemagglutinins from human-infecting H7N9 influenza viruses

Shi, Y.Zhang, W.Wang, F.Qi, J.Wu, Y.Song, H.Gao, F.Bi, Y.Zhang, Y.Fan, Z.Qin, C.Sun, H.Liu, J.Haywood, J.Liu, W.Gong, W.Wang, D.Shu, Y.Wang, Y.Yan, J.Gao, G.F.

(2013) Science 342: 243-247

  • DOI: 10.1126/science.1242917
  • Primary Citation of Related Structures:  
    4LCX, 4LKK, 4LKG, 4LKH, 4LKI, 4LKJ, 4KOL, 4KOM, 4KON

  • PubMed Abstract: 
  • An avian-origin human-infecting influenza (H7N9) virus was recently identified in China. We have evaluated the viral hemagglutinin (HA) receptor-binding properties of two human H7N9 isolates, A/Shanghai/1/2013 (SH-H7N9) (containing the avian-signatur ...

    An avian-origin human-infecting influenza (H7N9) virus was recently identified in China. We have evaluated the viral hemagglutinin (HA) receptor-binding properties of two human H7N9 isolates, A/Shanghai/1/2013 (SH-H7N9) (containing the avian-signature residue Gln(226)) and A/Anhui/1/2013 (AH-H7N9) (containing the mammalian-signature residue Leu(226)). We found that SH-H7N9 HA preferentially binds the avian receptor analog, whereas AH-H7N9 HA binds both avian and human receptor analogs. Furthermore, an AH-H7N9 mutant HA (Leu(226) → Gln) was found to exhibit dual receptor-binding property, indicating that other amino acid substitutions contribute to the receptor-binding switch. The structures of SH-H7N9 HA, AH-H7N9 HA, and its mutant in complex with either avian or human receptor analogs show how AH-H7N9 can bind human receptors while still retaining the avian receptor-binding property.


    Organizational Affiliation

    Research Network of Immunity and Health, Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing, China.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
hemagglutininA314Influenza A virusMutation(s): 0 
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
hemagglutininB168Influenza A virusMutation(s): 0 
Find proteins for V5IRV2 (Influenza A virus)
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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
C
3 N/A Oligosaccharides Interaction
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download Ideal Coordinates CCD File 
A, B
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 3
IDChainsNameType/Class2D Diagram3D Interactions
PRD_900067
Query on PRD_900067
C3'-sialyl-N-acetyllactosamineOligosaccharide /  Substrate analog

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.285 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.239 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 116.909α = 90
b = 116.909β = 90
c = 297.076γ = 120
Software Package:
Software NamePurpose
ADSCdata collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-11-06
    Type: Initial release
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary