5THF

Crystal structure of H3 hemagglutinin with insertion of two amino acids in the 150-loop from the A/Hong Kong/1/1968 (H3N2) influenza virus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.59 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.187 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The 150-Loop Restricts the Host Specificity of Human H10N8 Influenza Virus.

Tzarum, N.de Vries, R.P.Peng, W.Thompson, A.J.Bouwman, K.M.McBride, R.Yu, W.Zhu, X.Verheije, M.H.Paulson, J.C.Wilson, I.A.

(2017) Cell Rep 19: 235-245

  • DOI: 10.1016/j.celrep.2017.03.054
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Adaptation of influenza A viruses to new hosts are rare events but are the basis for emergence of new influenza pandemics in the human population. Thus, understanding the processes involved in such events is critical for anticipating potential pandem ...

    Adaptation of influenza A viruses to new hosts are rare events but are the basis for emergence of new influenza pandemics in the human population. Thus, understanding the processes involved in such events is critical for anticipating potential pandemic threats. In 2013, the first case of human infection by an avian H10N8 virus was reported, yet the H10 hemagglutinin (HA) maintains avian receptor specificity. However, the 150-loop of H10 HA, as well as related H7 and H15 subtypes, contains a two-residue insert that can potentially block human receptor binding. Mutation of the 150-loop on the background of Q226L and G228S mutations, which arose in the receptor-binding site of human pandemic H2 and H3 viruses, resulted in acquisition of human-type receptor specificity. Crystal structures of H10 HA mutants with human and avian receptor analogs, receptor-binding studies, and tissue staining experiments illustrate the important role of the 150-loop in H10 receptor specificity.


    Organizational Affiliation

    Department of Integrative Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Hemagglutinin HA1 chain
A, C, E
325Influenza A virus (strain A/Hong Kong/1/1968 H3N2)Mutation(s): 0 
Gene Names: HA
Find proteins for Q91MA7 (Influenza A virus (strain A/Hong Kong/1/1968 H3N2))
Go to UniProtKB:  Q91MA7
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Hemagglutinin HA2 chain
B, D, F
184Influenza A virus (strain A/Hong Kong/1/1968 H3N2)Mutation(s): 1 
Gene Names: HA
Find proteins for Q91MA7 (Influenza A virus (strain A/Hong Kong/1/1968 H3N2))
Go to UniProtKB:  Q91MA7
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BMA
Query on BMA

Download SDF File 
Download CCD File 
A, C, E
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
NAG
Query on NAG

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.59 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.187 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 68.981α = 90.00
b = 236.435β = 116.49
c = 72.645γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
PHASERphasing
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious DiseasesUnited StatesR56 AI117675
National Institutes of Health/National Institute Of Allergy and Infectious DiseasesUnited StatesAI114730

Revision History 

  • Version 1.0: 2017-04-05
    Type: Initial release
  • Version 1.1: 2017-04-26
    Type: Database references
  • Version 1.2: 2017-09-20
    Type: Author supporting evidence, Refinement description