6MWX

CryoEM structure of Chimeric Eastern Equine Encephalitis Virus with Fab of EEEV-69 Antibody


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.2 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Cryo-EM Structures of Eastern Equine Encephalitis Virus Reveal Mechanisms of Virus Disassembly and Antibody Neutralization.

Hasan, S.S.Sun, C.Kim, A.S.Watanabe, Y.Chen, C.L.Klose, T.Buda, G.Crispin, M.Diamond, M.S.Klimstra, W.B.Rossmann, M.G.

(2018) Cell Rep 25: 3136-3147.e5

  • DOI: 10.1016/j.celrep.2018.11.067
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Alphaviruses are enveloped pathogens that cause arthritis and encephalitis. Here, we report a 4.4-Å cryoelectron microscopy (cryo-EM) structure of eastern equine encephalitis virus (EEEV), an alphavirus that causes fatal encephalitis in humans. Our a ...

    Alphaviruses are enveloped pathogens that cause arthritis and encephalitis. Here, we report a 4.4-Å cryoelectron microscopy (cryo-EM) structure of eastern equine encephalitis virus (EEEV), an alphavirus that causes fatal encephalitis in humans. Our analysis provides insights into viral entry into host cells. The envelope protein E2 showed a binding site for the cellular attachment factor heparan sulfate. The presence of a cryptic E2 glycan suggests how EEEV escapes surveillance by lectin-expressing myeloid lineage cells, which are sentinels of the immune system. A mechanism for nucleocapsid core release and disassembly upon viral entry was inferred based on pH changes and capsid dissociation from envelope proteins. The EEEV capsid structure showed a viral RNA genome binding site adjacent to a ribosome binding site for viral genome translation following genome release. Using five Fab-EEEV complexes derived from neutralizing antibodies, our investigation provides insights into EEEV host cell interactions and protective epitopes relevant to vaccine design.


    Organizational Affiliation

    Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.,Centre for Biological Sciences and Institute of Life Sciences, University of Southampton, Southampton SO17 1BJ, UK; Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, Oxford OX1 3QU, UK; Division of Structural Biology, University of Oxford, Oxford OX3 7BN, UK.,Centre for Biological Sciences and Institute of Life Sciences, University of Southampton, Southampton SO17 1BJ, UK.,Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110, USA; The Andrew M. and Jane M. Bursky Center for Human Immunology and Immunotherapy Programs, Washington University School of Medicine, St. Louis, MO 63110, USA.,Department of Immunology, University of Pittsburgh, Pittsburgh, PA 15261, USA; Center for Vaccine Research, University of Pittsburgh, Pittsburgh, PA 15261, USA.,Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA.,Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA. Electronic address: mr@purdue.edu.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
E1
A, E, I, M
441Eastern equine encephalitis virus (strain Florida 91-469)Mutation(s): 0 
Find proteins for Q4QXJ7 (Eastern equine encephalitis virus (strain Florida 91-469))
Go to UniProtKB:  Q4QXJ7
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
E2
B, F, J, N
420Eastern equine encephalitis virus (strain Florida 91-469)Mutation(s): 0 
Find proteins for Q4QXJ7 (Eastern equine encephalitis virus (strain Florida 91-469))
Go to UniProtKB:  Q4QXJ7
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
EEEV-69 antibody heavy chain
C, G, K, O
218N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
EEEV-69 antibody light chain
D, H, L, 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: 8.2 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious DiseasesUnited StatesR01AI095366
National Institutes of Health/National Institute Of Allergy and Infectious DiseasesUnited States2R01AI095436
National Institutes of Health/National Institute Of Allergy and Infectious DiseasesUnited StatesR21AI117331-01
Bill & Melinda Gates FoundationUnited KingdomOPP1115782

Revision History 

  • Version 1.0: 2018-12-19
    Type: Initial release
  • Version 1.1: 2018-12-26
    Type: Data collection, Database references