6MLM

H7 HA0 in complex with Fv from H7.5 IgG


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Potent anti-influenza H7 human monoclonal antibody induces separation of hemagglutinin receptor-binding head domains.

Turner, H.L.Pallesen, J.Lang, S.Bangaru, S.Urata, S.Li, S.Cottrell, C.A.Bowman, C.A.Crowe Jr., J.E.Wilson, I.A.Ward, A.B.

(2019) PLoS Biol 17: e3000139-e3000139

  • DOI: 10.1371/journal.pbio.3000139
  • Primary Citation of Related Structures:  
    6MLM

  • PubMed Abstract: 
  • Seasonal influenza virus infections can cause significant morbidity and mortality, but the threat from the emergence of a new pandemic influenza strain might have potentially even more devastating consequences. As such, there is intense interest in isolating and characterizing potent neutralizing antibodies that target the hemagglutinin (HA) viral surface glycoprotein ...

    Seasonal influenza virus infections can cause significant morbidity and mortality, but the threat from the emergence of a new pandemic influenza strain might have potentially even more devastating consequences. As such, there is intense interest in isolating and characterizing potent neutralizing antibodies that target the hemagglutinin (HA) viral surface glycoprotein. Here, we use cryo-electron microscopy (cryoEM) to decipher the mechanism of action of a potent HA head-directed monoclonal antibody (mAb) bound to an influenza H7 HA. The epitope of the antibody is not solvent accessible in the compact, prefusion conformation that typifies all HA structures to date. Instead, the antibody binds between HA head protomers to an epitope that must be partly or transiently exposed in the prefusion conformation. The "breathing" of the HA protomers is implied by the exposure of this epitope, which is consistent with metastability of class I fusion proteins. This structure likely therefore represents an early structural intermediate in the viral fusion process. Understanding the extent of transient exposure of conserved neutralizing epitopes also may lead to new opportunities to combat influenza that have not been appreciated previously.


    Organizational Affiliation

    Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California, United States of America.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Hemagglutinin HA1 chainA, E [auth B], I [auth H]328Influenza A virus (A/New York/107/2003(H7N2))Mutation(s): 0 
Gene Names: HA
UniProt
Find proteins for B2LVD7 (Influenza A virus)
Explore B2LVD7 
Go to UniProtKB:  B2LVD7
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Hemagglutinin HA2 chainB [auth C], F [auth D], J224Influenza A virus (A/New York/107/2003(H7N2))Mutation(s): 0 
Gene Names: HA
UniProt
Find proteins for B2LVD7 (Influenza A virus)
Explore B2LVD7 
Go to UniProtKB:  B2LVD7
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Heavy chain Fv of H7.5 FabC [auth E], G [auth F], K219Homo sapiensMutation(s): 0 
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Light chain Fv of H7.5 FabH [auth G], D [auth I], L213Homo sapiensMutation(s): 0 
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG (Subject of Investigation/LOI)
Query on NAG

Download Ideal Coordinates CCD File 
M [auth A] , N [auth A] , O [auth C] , P [auth B] , Q [auth B] , R [auth D] , S [auth H] , T [auth H] , 
M [auth A],  N [auth A],  O [auth C],  P [auth B],  Q [auth B],  R [auth D],  S [auth H],  T [auth H],  U [auth J]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesU19 AI117905
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesHHSN272201400024C

Revision History  (Full details and data files)

  • Version 1.0: 2019-02-20
    Type: Initial release
  • Version 1.1: 2019-12-18
    Changes: Author supporting evidence, Other
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary