5E32

Crystal structure of H5 hemagglutinin mutant (N224K, Q226L, N158D and L133a deletion) from the influenza virus A/chicken/Vietnam/NCVD-093/2008 (H5N1)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.199 

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Literature

Structural Basis for a Switch in Receptor Binding Specificity of Two H5N1 Hemagglutinin Mutants.

Zhu, X., Viswanathan, K., Raman, R., Yu, W., Sasisekharan, R., Wilson, I.A.

(2015) Cell Rep 13: 1683-1691

  • DOI: 10.1016/j.celrep.2015.10.027
  • Primary Citation of Related Structures:  
    5E2Y, 5E2Z, 5E30, 5E32, 5E34, 5E35

  • PubMed Abstract: 

    • Avian H5N1 influenza viruses continue to spread in wild birds and domestic poultry with sporadic infection in humans. Receptor binding specificity changes are a prerequisite for H5N1 viruses and other zoonotic viruses to be transmitted among humans. Previous reported hemagglutinin (HA) mutants from ferret-transmissible H5N1 viruses of A/Vietnam/1203/2004 and A/Indonesia/5/2005 showed slightly increased, but still very weak, binding to human receptors ...

    Avian H5N1 influenza viruses continue to spread in wild birds and domestic poultry with sporadic infection in humans. Receptor binding specificity changes are a prerequisite for H5N1 viruses and other zoonotic viruses to be transmitted among humans. Previous reported hemagglutinin (HA) mutants from ferret-transmissible H5N1 viruses of A/Vietnam/1203/2004 and A/Indonesia/5/2005 showed slightly increased, but still very weak, binding to human receptors. From mutagenesis and glycan array studies, we previously identified two H5N1 HA mutants that could more effectively switch receptor specificity to human-like α2-6-linked sialosides with avidity comparable to wild-type H5 HA binding to avian-like α2-3-linked sialosides. Here, crystal structures of these two H5 HA mutants free and in complex with human and avian glycan receptor analogs reveal the structural basis for their preferential binding to human receptors. These findings suggest continuous surveillance should be maintained to monitor and assess human-to-human transmission potential of H5N1 viruses.

    Organizational Affiliation: 

    Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA; Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA 92037, USA. Electronic address: wilson@scripps.edu.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HemagglutininA333Influenza A virus (A/chicken/Vietnam/NCVD-093/2008(H5N1))Mutation(s): 3 
Gene Names: HA
UniProt
Find proteins for C4P282 (Influenza A virus)
Explore C4P282 
Go to UniProtKB:  C4P282
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupC4P282
Protein Feature View
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HemagglutininB180Influenza A virus (A/chicken/Vietnam/NCVD-093/2008(H5N1))Mutation(s): 0 
Gene Names: HA
UniProt
Find proteins for C4P282 (Influenza A virus)
Explore C4P282 
Go to UniProtKB:  C4P282
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupC4P282
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG
Download Ideal Coordinates CCD File 
C [auth A],
D [auth A],
E [auth A]		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: 2.70 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.199 
  • Space Group: P 6
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 133.046α = 90
b = 133.046β = 90
c = 134.693γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2015-10-01 
  • Released Date: 2015-12-02 
    • Deposition Author(s): Zhu, X., Wilson, I.A.

Revision History  (Full details and data files)

  • Version 1.0: 2015-12-02
    Type: Initial release
  • Version 1.1: 2015-12-09
    Changes: Database references
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary