4H32

The crystal structure of the hemagglutinin H17 derived the bat influenza A virus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.219 

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This is version 1.1 of the entry. See complete history


Literature

Bat-derived influenza hemagglutinin H17 does not bind canonical avian or human receptors and most likely uses a unique entry mechanism.

Sun, X.Shi, Y.Lu, X.He, J.Gao, F.Yan, J.Qi, J.Gao, G.F.

(2013) Cell Rep 3: 769-778

  • DOI: https://doi.org/10.1016/j.celrep.2013.01.025
  • Primary Citation of Related Structures:  
    4H32

  • PubMed Abstract: 

    A new influenza-like virus genome (H17N10) was recently discovered in bats and offers a new perspective about the origin and evolution of influenza viruses. The viral envelope glycoprotein hemagglutinin (HA) is responsible for influenza virus receptor binding, fusion, and entry into the cell; therefore, the structure and function of HA H17 was characterized. The 2.70 Å resolution crystal structure revealed that H17 has a typical influenza A virus HA fold, but with some special features, including a distorted putative sialic acid (SA) binding site and low thermostability. No binding to either the canonical human α2,6 SA-linkage or avian α2,3 SA-linkage receptor was observed. Furthermore, H17 glycan binding was not detected using a chip covering more than 600 glycans. Our results demonstrate that H17 is unique among characterized HAs and that the bat-derived influenza virus may use a different entry mechanism compared to canonical influenza viruses.


  • Organizational Affiliation

    CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Hemagglutinin
A, C, E, G, I
A, C, E, G, I, K
320Influenza A virus (A/little yellow-shouldered bat/Guatemala/060/2010(H17N10))Mutation(s): 0 
Gene Names: HA
UniProt
Find proteins for H6QM93 (Influenza A virus)
Explore H6QM93 
Go to UniProtKB:  H6QM93
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupH6QM93
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Hemagglutinin
B, D, F, H, J
B, D, F, H, J, L
171Influenza A virus (A/little yellow-shouldered bat/Guatemala/060/2010(H17N10))Mutation(s): 0 
Gene Names: HA
UniProt
Find proteins for H6QM93 (Influenza A virus)
Explore H6QM93 
Go to UniProtKB:  H6QM93
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupH6QM93
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.219 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 74.149α = 90
b = 101.84β = 90
c = 497.091γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
PHASESphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-07-10
    Type: Initial release
  • Version 1.1: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Database references, Derived calculations, Structure summary