6MWV

CryoEM structure of Chimeric Eastern Equine Encephalitis Virus with Fab of EEEV-58 Antibody


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.30 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: 10.1016/j.celrep.2018.11.067
  • Primary Citation of Related Structures:  
    6MUI, 6MW9, 6MWX, 6MX4, 6MWV, 6MX7, 6MWC

  • 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 Biological Sciences, Purdue University, West Lafayette, IN 47907, USA. Electronic address: mr@purdue.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
E1AEIM441Eastern equine encephalitis virusMutation(s): 0 
EC: 3.4.21.90
Find proteins for Q4QXJ7 (Eastern equine encephalitis virus (strain Florida 91-469))
Explore Q4QXJ7 
Go to UniProtKB:  Q4QXJ7
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
E2BFJN420Eastern equine encephalitis virusMutation(s): 0 
EC: 3.4.21.90
Find proteins for Q4QXJ7 (Eastern equine encephalitis virus (strain Florida 91-469))
Explore Q4QXJ7 
Go to UniProtKB:  Q4QXJ7
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
EEEV-58 antibody heavy chainCGKO218Mus musculusMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
EEEV-58 antibody light chainDHLP214Mus musculusMutation(s): 0 
Find proteins for G0YP42 (Mus musculus)
Explore G0YP42 
Go to UniProtKB:  G0YP42
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.30 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 

  • 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