6MWC

CryoEM structure of chimeric Eastern Equine Encephalitis Virus with Fab of EEEV-5 antibody


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.50 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 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: https://doi.org/10.1016/j.celrep.2018.11.067
  • Primary Citation of Related Structures:  
    6MUI, 6MW9, 6MWC, 6MWV, 6MWX, 6MX4, 6MX7

  • 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 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 Biological Sciences, Purdue University, West Lafayette, IN 47907, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
E1
A, E, I, M
441Eastern equine encephalitis virusMutation(s): 0 
UniProt
Find proteins for Q4QXJ7 (Eastern equine encephalitis virus (strain Florida 91-469))
Explore Q4QXJ7 
Go to UniProtKB:  Q4QXJ7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ4QXJ7
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
E2
B, F, J, N
420Eastern equine encephalitis virusMutation(s): 0 
UniProt
Find proteins for Q4QXJ7 (Eastern equine encephalitis virus (strain Florida 91-469))
Explore Q4QXJ7 
Go to UniProtKB:  Q4QXJ7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ4QXJ7
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
EEEV-5 antibody heavy chain
C, G, K, O
218Mus musculusMutation(s): 0 
Entity Groups  
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Sequence Annotations
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  • Reference Sequence
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
EEEV-5 antibody light chain
D, H, L, P
214Mus musculusMutation(s): 0 
UniProt
Find proteins for G0YP42 (Mus musculus)
Explore G0YP42 
Go to UniProtKB:  G0YP42
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupG0YP42
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesR01AI095366
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United States2R01AI095436
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesR21AI117331-01
Bill & Melinda Gates FoundationUnited KingdomOPP1115782

Revision History  (Full details and data files)

  • Version 1.0: 2018-12-19
    Type: Initial release
  • Version 1.1: 2018-12-26
    Changes: Data collection, Database references
  • Version 1.2: 2019-12-18
    Changes: Author supporting evidence