4F3Z

Crystal structure of a swine H1N2 influenza virus hemagglutinin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.234 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Functional Balance of the Hemagglutinin and Neuraminidase Activities Accompanies the Emergence of the 2009 H1N1 Influenza Pandemic.

Xu, R.Zhu, X.McBride, R.Nycholat, C.M.Yu, W.Paulson, J.C.Wilson, I.A.

(2012) J.Virol. 86: 9221-9232

  • DOI: 10.1128/JVI.00697-12

  • PubMed Abstract: 
  • The 2009 H1N1 influenza pandemic is the first human pandemic in decades and was of swine origin. Although swine are believed to be an intermediate host in the emergence of new human influenza viruses, there is still little known about the host barrie ...

    The 2009 H1N1 influenza pandemic is the first human pandemic in decades and was of swine origin. Although swine are believed to be an intermediate host in the emergence of new human influenza viruses, there is still little known about the host barriers that keep swine influenza viruses from entering the human population. We surveyed swine progenitors and human viruses from the 2009 pandemic and measured the activities of the hemagglutinin (HA) and neuraminidase (NA), which are the two viral surface proteins that interact with host glycan receptors. A functional balance of these two activities (HA binding and NA cleavage) is found in human viruses but not in the swine progenitors. The human 2009 H1N1 pandemic virus exhibited both low HA avidity for glycan receptors as a result of mutations near the receptor binding site and weak NA enzymatic activity. Thus, a functional match between the hemagglutinin and neuraminidase appears to be necessary for efficient transmission between humans and may be an indicator of the pandemic potential of zoonotic viruses.


    Organizational Affiliation

    Department of Molecular Biology, Scripps Research Institute, La Jolla, California, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Hemagglutinin
A, C, E
329Influenza A virusMutation(s): 2 
Gene Names: HA
Find proteins for Q8QT89 (Influenza A virus)
Go to UniProtKB:  Q8QT89
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Hemagglutinin
B, D, F
179Influenza A virusMutation(s): 0 
Gene Names: HA
Find proteins for Q8QT89 (Influenza A virus)
Go to UniProtKB:  Q8QT89
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download SDF File 
Download CCD File 
C
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.234 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 93.440α = 90.00
b = 94.920β = 90.00
c = 220.530γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
Blu-Icedata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2012-05-09 
  • Released Date: 2012-07-04 
  • Deposition Author(s): Xu, R., Wilson, I.A.

Revision History 

  • Version 1.0: 2012-07-04
    Type: Initial release
  • Version 1.1: 2012-08-22
    Type: Database references