4R8W

Crystal structure of H7 hemagglutinin from A/Anhui/1/2013 in complex with a neutralizing antibody CT149


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.79 Å
  • R-Value Free: 0.311 
  • R-Value Work: 0.262 
  • R-Value Observed: 0.265 

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This is version 1.1 of the entry. See complete history


Literature

A potent broad-spectrum protective human monoclonal antibody crosslinking two haemagglutinin monomers of influenza A virus

Wu, Y.Cho, M.Shore, D.Song, M.Choi, J.Jiang, T.Deng, Y.Q.Bourgeois, M.Almli, L.Yang, H.Chen, L.M.Shi, Y.Qi, J.Li, A.Yi, K.S.Chang, M.Bae, J.S.Lee, H.Shin, J.Stevens, J.Hong, S.Qin, C.F.Gao, G.F.Chang, S.J.Donis, R.O.

(2015) Nat Commun 6: 7708-7708

  • DOI: 10.1038/ncomms8708
  • Primary Citation of Related Structures:  
    4R8W, 4UBD

  • PubMed Abstract: 
  • Effective annual influenza vaccination requires frequent changes in vaccine composition due to both antigenic shift for different subtype hemagglutinins (HAs) and antigenic drift in a particular HA. Here we present a broadly neutralizing human monoclonal antibody with an unusual binding modality ...

    Effective annual influenza vaccination requires frequent changes in vaccine composition due to both antigenic shift for different subtype hemagglutinins (HAs) and antigenic drift in a particular HA. Here we present a broadly neutralizing human monoclonal antibody with an unusual binding modality. The antibody, designated CT149, was isolated from convalescent patients infected with pandemic H1N1 in 2009. CT149 is found to neutralize all tested group 2 and some group 1 influenza A viruses by inhibiting low pH-induced, HA-mediated membrane fusion. It promotes killing of infected cells by Fc-mediated antibody-dependent cellular cytotoxicity and complement-dependent cytotoxicity. X-ray crystallographic data reveal that CT149 binds primarily to the fusion domain in HA2, and the light chain is also largely involved in binding. The epitope recognized by this antibody comprises amino-acid residues from two adjacent protomers of HA. This binding characteristic of CT149 will provide more information to support the design of more potent influenza vaccines.


    Organizational Affiliation

    Influenza Division, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HemagglutininA321Influenza A virus (A/Anhui/1-BALF_RG45/2013(H7N9))Mutation(s): 0 
Gene Names: HA
UniProt
Find proteins for A0A024E3P0 (Influenza A virus)
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Go to UniProtKB:  A0A024E3P0
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
HemagglutininB177Influenza A virus (A/Anhui/1-BALF_RG45/2013(H7N9))Mutation(s): 0 
Gene Names: HA
UniProt
Find proteins for A0A024E2M1 (Influenza A virus)
Explore A0A024E2M1 
Go to UniProtKB:  A0A024E2M1
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Heavy chain of neutralizing antibody CT149C [auth H]231Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Light chain of neutralizing antibody CT149D [auth L]216Homo sapiensMutation(s): 0 
Protein Feature View
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  • 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 
E [auth A], F [auth A], G [auth B]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: 2.79 Å
  • R-Value Free: 0.311 
  • R-Value Work: 0.262 
  • R-Value Observed: 0.265 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 126.856α = 90
b = 126.856β = 90
c = 409.596γ = 120
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data 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: 2015-08-26
    Type: Initial release
  • Version 1.1: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary