4FFZ

Crystal Structure of DENV1-E111 fab fragment bound to DENV-1 DIII (Western Pacific-74 strain).


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.8 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.237 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Basis of Differential Neutralization of DENV-1 Genotypes by an Antibody that Recognizes a Cryptic Epitope.

Austin, S.K.Dowd, K.A.Shrestha, B.Nelson, C.A.Edeling, M.A.Johnson, S.Pierson, T.C.Diamond, M.S.Fremont, D.H.

(2012) Plos Pathog. 8: e1002930-e1002930

  • DOI: 10.1371/journal.ppat.1002930
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • We previously developed a panel of neutralizing monoclonal antibodies against Dengue virus (DENV)-1, of which few exhibited inhibitory activity against all DENV-1 genotypes. This finding is consistent with reports observing variable neutralization of ...

    We previously developed a panel of neutralizing monoclonal antibodies against Dengue virus (DENV)-1, of which few exhibited inhibitory activity against all DENV-1 genotypes. This finding is consistent with reports observing variable neutralization of different DENV strains and genotypes using serum from individuals that experienced natural infection or immunization. Herein, we describe the crystal structures of DENV1-E111 bound to a novel CC' loop epitope on domain III (DIII) of the E protein from two different DENV-1 genotypes. Docking of our structure onto the available cryo-electron microscopy models of DENV virions revealed that the DENV1-E111 epitope was inaccessible, suggesting that this antibody recognizes an uncharacterized virus conformation. While the affinity of binding between DENV1-E111 and DIII varied by genotype, we observed limited correlation with inhibitory activity. Instead, our results support the conclusion that potent neutralization depends on genotype-dependent exposure of the CC' loop epitope. These findings establish new structural complexity of the DENV virion, which may be relevant for the choice of DENV strain for induction or analysis of neutralizing antibodies in the context of vaccine development.


    Organizational Affiliation

    Department of Pathology & Immunology, Washington University School of Medicine, Saint Louis, Missouri, United States of America.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Envelope protein E
A, X
111Dengue virus 1Mutation(s): 0 
Find proteins for Q88640 (Dengue virus 1)
Go to UniProtKB:  Q88640
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
DENV1-E111 fab fragment (light chain)
L, Y
216N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
DENV1-E111 fab fragment (heavy chain)
H, Z
217N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.8 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.237 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 82.865α = 90.00
b = 52.013β = 107.49
c = 136.402γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
PDB_EXTRACTdata extraction
SCALEPACKdata scaling
DENZOdata reduction
PHASERphasing
HKL-3000data collection
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-06-27
    Type: Initial release
  • Version 1.1: 2012-10-31
    Type: Database references
  • Version 1.2: 2017-11-15
    Type: Refinement description