5C0S

Crystal structure of a generation 4 influenza hemagglutinin stabilized stem in complex with the broadly neutralizing antibody CR6261


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.30 Å
  • R-Value Free: 0.310 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.241 

Starting Models: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Hemagglutinin-stem nanoparticles generate heterosubtypic influenza protection.

Yassine, H.M.Boyington, J.C.McTamney, P.M.Wei, C.J.Kanekiyo, M.Kong, W.P.Gallagher, J.R.Wang, L.Zhang, Y.Joyce, M.G.Lingwood, D.Moin, S.M.Andersen, H.Okuno, Y.Rao, S.S.Harris, A.K.Kwong, P.D.Mascola, J.R.Nabel, G.J.Graham, B.S.

(2015) Nat Med 21: 1065-1070

  • DOI: https://doi.org/10.1038/nm.3927
  • Primary Citation of Related Structures:  
    5C0R, 5C0S

  • PubMed Abstract: 

    The antibody response to influenza is primarily focused on the head region of the hemagglutinin (HA) glycoprotein, which in turn undergoes antigenic drift, thus necessitating annual updates of influenza vaccines. In contrast, the immunogenically subdominant stem region of HA is highly conserved and recognized by antibodies capable of binding multiple HA subtypes. Here we report the structure-based development of an H1 HA stem-only immunogen that confers heterosubtypic protection in mice and ferrets. Six iterative cycles of structure-based design (Gen1-Gen6) yielded successive H1 HA stabilized-stem (HA-SS) immunogens that lack the immunodominant head domain. Antigenic characterization, determination of two HA-SS crystal structures in complex with stem-specific monoclonal antibodies and cryo-electron microscopy analysis of HA-SS on ferritin nanoparticles (H1-SS-np) confirmed the preservation of key structural elements. Vaccination of mice and ferrets with H1-SS-np elicited broadly cross-reactive antibodies that completely protected mice and partially protected ferrets against lethal heterosubtypic H5N1 influenza virus challenge despite the absence of detectable H5N1 neutralizing activity in vitro. Passive transfer of immunoglobulin from H1-SS-np-immunized mice to naive mice conferred protection against H5N1 challenge, indicating that vaccine-elicited HA stem-specific antibodies can protect against diverse group 1 influenza strains.


  • Organizational Affiliation

    Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Hemagglutinin, Envelope glycoprotein, Fibritin fusion protein305Influenza A virus (A/New Caledonia/20/1999(H1N1))HIV-1 M:B_HXB2RTequatrovirus T4
This entity is chimeric
Mutation(s): 0 
Gene Names: HAenvwac
UniProt
Find proteins for P04578 (Human immunodeficiency virus type 1 group M subtype B (isolate HXB2))
Explore P04578 
Go to UniProtKB:  P04578
Find proteins for D9IEJ2 (Enterobacteria phage T4)
Explore D9IEJ2 
Go to UniProtKB:  D9IEJ2
Find proteins for Q6WG00 (Influenza A virus)
Explore Q6WG00 
Go to UniProtKB:  Q6WG00
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsQ6WG00P04578D9IEJ2
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
CR6261 antibody heavy chainB [auth H]226Homo sapiensMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
CR6261 antibody light chainC [auth L]221Homo sapiensMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.30 Å
  • R-Value Free: 0.310 
  • R-Value Work: 0.238 
  • R-Value Observed: 0.241 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 101.649α = 90
b = 101.649β = 90
c = 186.022γ = 120
Software Package:
Software NamePurpose
HKL-2000data reduction
SCALEPACKdata scaling
PHASERphasing
PHENIXrefinement
Cootmodel building

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-09-02
    Type: Initial release
  • Version 1.1: 2015-09-16
    Changes: Database references
  • Version 1.2: 2015-10-21
    Changes: Source and taxonomy
  • Version 1.3: 2023-09-27
    Changes: Data collection, Database references, Derived calculations, Refinement description