6OC3

Crystal structure of FluA-20 Fab in complex with the head domain of H1 (A/Solomon Islands/3/2006)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.237 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A Site of Vulnerability on the Influenza Virus Hemagglutinin Head Domain Trimer Interface.

Bangaru, S.Lang, S.Schotsaert, M.Vanderven, H.A.Zhu, X.Kose, N.Bombardi, R.Finn, J.A.Kent, S.J.Gilchuk, P.Gilchuk, I.Turner, H.L.Garcia-Sastre, A.Li, S.Ward, A.B.Wilson, I.A.Crowe Jr., J.E.

(2019) Cell 177: 1136-1152.e18

  • DOI: 10.1016/j.cell.2019.04.011
  • Primary Citation of Related Structures:  
    6OBZ, 6OC3

  • PubMed Abstract: 
  • Here, we describe the discovery of a naturally occurring human antibody (Ab), FluA-20, that recognizes a new site of vulnerability on the hemagglutinin (HA) head domain and reacts with most influenza A viruses. Structural characterization of FluA-20 ...

    Here, we describe the discovery of a naturally occurring human antibody (Ab), FluA-20, that recognizes a new site of vulnerability on the hemagglutinin (HA) head domain and reacts with most influenza A viruses. Structural characterization of FluA-20 with H1 and H3 head domains revealed a novel epitope in the HA trimer interface, suggesting previously unrecognized dynamic features of the trimeric HA protein. The critical HA residues recognized by FluA-20 remain conserved across most subtypes of influenza A viruses, which explains the Ab's extraordinary breadth. The Ab rapidly disrupted the integrity of HA protein trimers, inhibited cell-to-cell spread of virus in culture, and protected mice against challenge with viruses of H1N1, H3N2, H5N1, or H7N9 subtypes when used as prophylaxis or therapy. The FluA-20 Ab has uncovered an exceedingly conserved protective determinant in the influenza HA head domain trimer interface that is an unexpected new target for anti-influenza therapeutics and vaccines.


    Organizational Affiliation

    Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232, USA; The Vanderbilt Vaccine Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN 37232, USA. Electronic address: james.crowe@vanderbilt.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Heavy chain of FluA-20 FabAC235Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Light chain of FluA-20 FabBD214Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
HemagglutininEF227Influenza A virus (A/Solomon Islands/3/2006(H1N1))Mutation(s): 0 
Gene Names: HA
Find proteins for A7Y8I1 (Influenza A virus)
Explore A7Y8I1 
Go to UniProtKB:  A7Y8I1
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 CCD File 
E
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: 2.85 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.237 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 100.468α = 90
b = 109.775β = 90
c = 146.394γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2019-03-21 
  • Released Date: 2019-05-15 
  • Deposition Author(s): Wilson, I.A., Lang, S.

Revision History 

  • Version 1.0: 2019-05-15
    Type: Initial release
  • Version 1.1: 2019-06-12
    Changes: Data collection, Database references
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary