5VJL

Crystal structure of H7 hemagglutinin mutant (V186K, K193T, G228S) from the influenza virus A/Shanghai/2/2013 (H7N9) with LSTc

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.597 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.218 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 

Literature

Three mutations switch H7N9 influenza to human-type receptor specificity.

de Vries, R.P., Peng, W., Grant, O.C., Thompson, A.J., Zhu, X., Bouwman, K.M., de la Pena, A.T.T., van Breemen, M.J., Ambepitiya Wickramasinghe, I.N., de Haan, C.A.M., Yu, W., McBride, R., Sanders, R.W., Woods, R.J., Verheije, M.H., Wilson, I.A., Paulson, J.C.

(2017) PLoS Pathog. 13: e1006390-e1006390

  • DOI: 10.1371/journal.ppat.1006390
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • The avian H7N9 influenza outbreak in 2013 resulted from an unprecedented incidence of influenza transmission to humans from infected poultry. The majority of human H7N9 isolates contained a hemagglutinin (HA) mutation (Q226L) that has previously been ...

    The avian H7N9 influenza outbreak in 2013 resulted from an unprecedented incidence of influenza transmission to humans from infected poultry. The majority of human H7N9 isolates contained a hemagglutinin (HA) mutation (Q226L) that has previously been associated with a switch in receptor specificity from avian-type (NeuAcα2-3Gal) to human-type (NeuAcα2-6Gal), as documented for the avian progenitors of the 1957 (H2N2) and 1968 (H3N2) human influenza pandemic viruses. While this raised concern that the H7N9 virus was adapting to humans, the mutation was not sufficient to switch the receptor specificity of H7N9, and has not resulted in sustained transmission in humans. To determine if the H7 HA was capable of acquiring human-type receptor specificity, we conducted mutation analyses. Remarkably, three amino acid mutations conferred a switch in specificity for human-type receptors that resembled the specificity of the 2009 human H1 pandemic virus, and promoted binding to human trachea epithelial cells.

    Organizational Affiliation: 

    Departments of Molecular Medicine, & Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, United States of America.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Hemagglutinin HA1
A
325Influenza A virusMutation(s): 3 
Gene Names: HA
Find proteins for R4NN21 (Influenza A virus)
Go to UniProtKB:  R4NN21
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Hemagglutinin HA2
B
183Influenza A virusMutation(s): 0 
Gene Names: HA
Find proteins for R4NN21 (Influenza A virus)
Go to UniProtKB:  R4NN21
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MOH
Query on MOH
Download SDF File 
Download CCD File 
A
METHANOL
C H4 O
OKKJLVBELUTLKV-UHFFFAOYSA-N
 Ligand Interaction
NAG
Query on NAG
Download SDF File 
Download CCD File 
A, B
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
SIA
Query on SIA
Download SDF File 
Download CCD File 
A
O-SIALIC ACID
C11 H19 N O9
SQVRNKJHWKZAKO-YRMXFSIDSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.597 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.218 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 116.375α = 90.00
b = 116.375β = 90.00
c = 296.008γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data reduction
PHASERphasing
PHENIXrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

  • Deposited Date: 2017-04-19 
  • Released Date: 2017-05-24 
  • Deposition Author(s): Zhu, X., Wilson, I.A.

Revision History 

  • Version 1.0: 2017-05-24
    Type: Initial release
  • Version 1.1: 2017-05-31
    Type: Data collection
  • Version 1.2: 2017-06-28
    Type: Database references