4UIF

Cryo-EM structure of Dengue virus serotype 2 in complex with antigen-binding fragments of human antibody 2D22


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.50 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

Cryo-EM structure of an antibody that neutralizes dengue virus type 2 by locking E protein dimers.

Fibriansah, G.Ibarra, K.D.Ng, T.S.Smith, S.A.Tan, J.L.Lim, X.N.Ooi, J.S.Kostyuchenko, V.A.Wang, J.de Silva, A.M.Harris, E.Crowe, J.E.Lok, S.M.

(2015) Science 349: 88-91

  • DOI: 10.1126/science.aaa8651
  • Primary Citation of Related Structures:  
    4UIF, 4UIH, 5A1Z

  • PubMed Abstract: 
  • There are four closely-related dengue virus (DENV) serotypes. Infection with one serotype generates antibodies that may cross-react and enhance infection with other serotypes in a secondary infection. We demonstrated that DENV serotype 2 (DENV2)-specific human monoclonal antibody (HMAb) 2D22 is therapeutic in a mouse model of antibody-enhanced severe dengue disease ...

    There are four closely-related dengue virus (DENV) serotypes. Infection with one serotype generates antibodies that may cross-react and enhance infection with other serotypes in a secondary infection. We demonstrated that DENV serotype 2 (DENV2)-specific human monoclonal antibody (HMAb) 2D22 is therapeutic in a mouse model of antibody-enhanced severe dengue disease. We determined the cryo-electron microscopy (cryo-EM) structures of HMAb 2D22 complexed with two different DENV2 strains. HMAb 2D22 binds across viral envelope (E) proteins in the dimeric structure, which probably blocks the E protein reorganization required for virus fusion. HMAb 2D22 "locks" two-thirds of or all dimers on the virus surface, depending on the strain, but neutralizes these DENV2 strains with equal potency. The epitope defined by HMAb 2D22 is a potential target for vaccines and therapeutics.


    Organizational Affiliation

    Program in Emerging Infectious Diseases, Duke-National University of Singapore Graduate Medical School, Singapore. Centre for BioImaging Sciences, National University of Singapore, Singapore. sheemei.lok@duke-nus.edu.sg james.crowe@vanderbilt.edu.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DENGUE VIRUS SEROTYPE 2 STRAIN PVP94 07 - ENVELOPE PROTEINA, C, E495Dengue virus 2Mutation(s): 0 
EC: 3.4.21.91 (UniProt), 3.6.1.15 (UniProt), 3.6.4.13 (UniProt)
UniProt
Find proteins for E0WXJ2 (Dengue virus 2)
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Go to UniProtKB:  E0WXJ2
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UniProt GroupE0WXJ2
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
DENGUE VIRUS SEROTYPE 2 STRAIN STRAIN PVP94 07 - MEMBRANE PROTEINB, D, F72Dengue virus 2Mutation(s): 0 
EC: 3.4.21.91 (UniProt), 3.6.1.15 (UniProt), 3.6.4.13 (UniProt)
UniProt
Find proteins for E0WXJ2 (Dengue virus 2)
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UniProt GroupE0WXJ2
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
ANTIGEN-BINDING FRAGMENT OF HUMAN ANTIBODY 2D22 - HEAVY CHAING, I, K128Homo sapiensMutation(s): 0 
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
ANTIGEN-BINDING FRAGMENT OF HUMAN ANTIBODY 2D22 - LIGHT CHAINH, J, L115Homo sapiensMutation(s): 0 
UniProt
Find proteins for S6BGD6 (Homo sapiens)
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-07-15
    Type: Initial release
  • Version 1.1: 2017-08-30
    Changes: Data collection, Derived calculations
  • Version 1.2: 2018-02-07
    Changes: Database references, Structure summary