4CBF

Near-atomic resolution cryo-EM structure of Dengue serotype 4 virus


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.1 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Near-Atomic Resolution Cryo-Electron Microscopic Structure of Dengue Serotype 4 Virus.

Kostyuchenko, V.A.Chew, P.L.Ng, T.Lok, S.

(2014) J.Virol. 88: 477

  • DOI: 10.1128/JVI.02641-13

  • PubMed Abstract: 
  • Dengue virus (DENV), a mosquito-borne virus, is responsible for millions of cases of infections worldwide. There are four DENV serotypes (DENV1 to -4). After a primary DENV infection, the antibodies elicited confer lifetime protection against that DE ...

    Dengue virus (DENV), a mosquito-borne virus, is responsible for millions of cases of infections worldwide. There are four DENV serotypes (DENV1 to -4). After a primary DENV infection, the antibodies elicited confer lifetime protection against that DENV serotype. However, in a secondary infection with another serotype, the preexisting antibodies may cause antibody-dependent enhancement (ADE) of infection of macrophage cells, leading to the development of the more severe form of disease, dengue hemorrhagic fever. Thus, a safe vaccine should stimulate protection against all dengue serotypes simultaneously. To facilitate the development of a vaccine, good knowledge of different DENV serotype structures is crucial. Structures of DENV1 and DENV2 had been solved previously. Here we present a near-atomic resolution cryo-electron microscopy (cryo-EM) structure of mature DENV4. Comparison of the DENV4 structure with similar-resolution cryo-EM structures of DENV1 and DENV2 showed differences in surface charge distribution, which may explain their differences in binding to cellular receptors, such as heparin. Also, observed variations in amino acid residues involved in interactions between envelope and membrane proteins on the virus surface correlate with their ability to undergo structural changes at higher temperatures.


    Organizational Affiliation

    Program in Emerging Infectious Diseases, Duke-NUS Graduate Medical School, Singapore.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ENVELOPE PROTEIN E
A, C, E
495Dengue virus 4Mutation(s): 0 
Find proteins for E0WXI2 (Dengue virus 4)
Go to UniProtKB:  E0WXI2
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
M PROTEIN
B, D, F
74Dengue virus 4Mutation(s): 0 
Find proteins for E0WXI2 (Dengue virus 4)
Go to UniProtKB:  E0WXI2
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.1 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: 2013-11-06
    Type: Initial release
  • Version 1.1: 2014-01-08
    Type: Database references
  • Version 1.2: 2015-04-22
    Type: Atomic model, Database references, Source and taxonomy, Structure summary
  • Version 1.3: 2017-08-23
    Type: Data collection