4UIH

Cryo-EM structure of Dengue virus serotype 2 strain New Guinea-C complexed with human antibody 2D22 Fab at 37 degree C. The Fab molecules were added to the virus before 37 degree C incubation.


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 20 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:  

  • 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)-spec ...

    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.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DENGUE VIRUS SEROTYPE 2 STRAIN NEW GUINEA-C E PROTEIN ECTODOMAIN
A, B, C
495Dengue virus type 2 (strain Thailand/NGS-C/1944)Mutation(s): 0 
Find proteins for P14340 (Dengue virus type 2 (strain Thailand/NGS-C/1944))
Go to UniProtKB:  P14340
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
ANTIGEN-BINDING FRAGMENT OF HUMAN ANTIBODY 2D22 -HEAVY CHAIN
D, F
128N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
ANTIGEN-BINDING FRAGMENT OF HUMAN ANTIBODY 2D22 -LIGHT CHAIN
E, G
115N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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