5ANY

Electron cryo-microscopy of chikungunya virus in complex with neutralizing antibody Fab CHK265


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 16.9 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

Broadly Neutralizing Alphavirus Antibodies Bind an Epitope on E2 and Inhibit Entry and Egress.

Fox, J.M.Long, F.Edeling, M.A.Lin, H.Van Duijl-Richter, M.K.S.Fong, R.H.Kahle, K.M.Smit, J.M.Jin, J.Simmons, G.Doranz, B.J.Crowe, J.E.J.Fremont, D.H.Rossmann, M.G.Diamond, M.S.

(2015) Cell 163: 1095

  • DOI: 10.1016/j.cell.2015.10.050

  • PubMed Abstract: 
  • We screened a panel of mouse and human monoclonal antibodies (MAbs) against chikungunya virus and identified several with inhibitory activity against multiple alphaviruses. Passive transfer of broadly neutralizing MAbs protected mice against infectio ...

    We screened a panel of mouse and human monoclonal antibodies (MAbs) against chikungunya virus and identified several with inhibitory activity against multiple alphaviruses. Passive transfer of broadly neutralizing MAbs protected mice against infection by chikungunya, Mayaro, and O'nyong'nyong alphaviruses. Using alanine-scanning mutagenesis, loss-of-function recombinant proteins and viruses, and multiple functional assays, we determined that broadly neutralizing MAbs block multiple steps in the viral lifecycle, including entry and egress, and bind to a conserved epitope on the B domain of the E2 glycoprotein. A 16 Å resolution cryo-electron microscopy structure of a Fab fragment bound to CHIKV E2 B domain provided an explanation for its neutralizing activity. Binding to the B domain was associated with repositioning of the A domain of E2 that enabled cross-linking of neighboring spikes. Our results suggest that B domain antigenic determinants could be targeted for vaccine or antibody therapeutic development against multiple alphaviruses of global concern.


    Organizational Affiliation

    Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
E1
A, C, E, G
451Chikungunya virusMutation(s): 0 
EC: 3.4.21.90
Find proteins for Q1H8W5 (Chikungunya virus)
Go to UniProtKB:  Q1H8W5
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
E2
B, D, F, H
354Chikungunya virusMutation(s): 0 
EC: 3.4.21.90
Find proteins for Q1H8W5 (Chikungunya virus)
Go to UniProtKB:  Q1H8W5
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
FAB CHK265
I, J, K, L
218N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
FAB
M, N, O, P
214N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 16.9 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: 2015-11-25
    Type: Initial release
  • Version 1.1: 2015-12-09
    Type: Database references
  • Version 1.2: 2018-10-03
    Type: Data collection