4NM8

Crystal structure of broadly neutralizing antibody CR8043 bound to H3 influenza hemagglutinin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.00 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.242 

Starting Models: experimental
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This is version 2.1 of the entry. See complete history


Literature

A common solution to group 2 influenza virus neutralization.

Friesen, R.H.Lee, P.S.Stoop, E.J.Hoffman, R.M.Ekiert, D.C.Bhabha, G.Yu, W.Juraszek, J.Koudstaal, W.Jongeneelen, M.Korse, H.J.Ophorst, C.Brinkman-van der Linden, E.C.Throsby, M.Kwakkenbos, M.J.Bakker, A.Q.Beaumont, T.Spits, H.Kwaks, T.Vogels, R.Ward, A.B.Goudsmit, J.Wilson, I.A.

(2014) Proc Natl Acad Sci U S A 111: 445-450

  • DOI: https://doi.org/10.1073/pnas.1319058110
  • Primary Citation of Related Structures:  
    4NM4, 4NM8

  • PubMed Abstract: 

    The discovery and characterization of broadly neutralizing antibodies (bnAbs) against influenza viruses have raised hopes for the development of monoclonal antibody (mAb)-based immunotherapy and the design of universal influenza vaccines. Only one human bnAb (CR8020) specifically recognizing group 2 influenza A viruses has been previously characterized that binds to a highly conserved epitope at the base of the hemagglutinin (HA) stem and has neutralizing activity against H3, H7, and H10 viruses. Here, we report a second group 2 bnAb, CR8043, which was derived from a different germ-line gene encoding a highly divergent amino acid sequence. CR8043 has in vitro neutralizing activity against H3 and H10 viruses and protects mice against challenge with a lethal dose of H3N2 and H7N7 viruses. The crystal structure and EM reconstructions of the CR8043-H3 HA complex revealed that CR8043 binds to a site similar to the CR8020 epitope but uses an alternative angle of approach and a distinct set of interactions. The identification of another antibody against the group 2 stem epitope suggests that this conserved site of vulnerability has great potential for design of therapeutics and vaccines.


  • Organizational Affiliation

    Crucell Vaccine Institute, Janssen Center of Excellence for Immunoprophylaxis, 2333 CN, Leiden, The Netherlands.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Hemagglutinin HA1 Chain
A, C, E
323Influenza A virus (A/Hong Kong/1/1968(H3N2))Mutation(s): 0 
Gene Names: HA
UniProt
Find proteins for Q91MA7 (Influenza A virus (strain A/Hong Kong/1/1968 H3N2))
Explore Q91MA7 
Go to UniProtKB:  Q91MA7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ91MA7
Glycosylation
Glycosylation Sites: 3
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Hemagglutinin HA2 Chain
B, D, F
176Influenza A virus (A/Hong Kong/1/1968(H3N2))Mutation(s): 0 
Gene Names: HA
UniProt
Find proteins for Q91MA7 (Influenza A virus (strain A/Hong Kong/1/1968 H3N2))
Explore Q91MA7 
Go to UniProtKB:  Q91MA7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ91MA7
Glycosylation
Glycosylation Sites: 1
Sequence Annotations
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Antibody CR8043, Light ChainG [auth L],
I [auth M],
K [auth N]
220Homo sapiensMutation(s): 0 
Gene Names: IGKC
UniProt & NIH Common Fund Data Resources
Find proteins for P01834 (Homo sapiens)
Explore P01834 
Go to UniProtKB:  P01834
PHAROS:  P01834
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UniProt GroupP01834
Sequence Annotations
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  • Reference Sequence
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Antibody CR8043, Heavy ChainH,
J [auth I],
L [auth J]
230Homo sapiensMutation(s): 0 
Gene Names: DKFZp686I15212DKFZp686P15220
UniProt
Find proteins for S6C4S0 (Homo sapiens)
Explore S6C4S0 
Go to UniProtKB:  S6C4S0
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UniProt GroupS6C4S0
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  • Reference Sequence
Oligosaccharides

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Entity ID: 5
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
M [auth G],
N [auth K],
O,
P,
Q,
M [auth G],
N [auth K],
O,
P,
Q,
R
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.00 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.242 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 241.491α = 90
b = 142.355β = 133.46
c = 170.725γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
PHASERphasing
PHENIXrefinement
XDSdata reduction
XDSdata 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: 2013-12-25
    Type: Initial release
  • Version 1.1: 2014-01-22
    Changes: Database references
  • Version 1.2: 2017-06-21
    Changes: Database references, Source and taxonomy, Structure summary
  • Version 1.3: 2017-12-06
    Changes: Database references
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2023-09-20
    Changes: Data collection, Database references, Refinement description, Structure summary