3J2W

Electron cryo-microscopy of Chikungunya virus


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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This is version 1.2 of the entry. See complete history


Literature

Structural analyses at pseudo atomic resolution of Chikungunya virus and antibodies show mechanisms of neutralization.

Sun, S.Xiang, Y.Akahata, W.Holdaway, H.Pal, P.Zhang, X.Diamond, M.S.Nabel, G.J.Rossmann, M.G.

(2013) Elife 2: e00435-e00435

  • DOI: 10.7554/eLife.00435
  • Primary Citation of Related Structures:  
    4GQ9, 3J2W, 3J2X, 3J2Y, 3J2Z, 3J30

  • PubMed Abstract: 
  • A 5.3 Å resolution, cryo-electron microscopy (cryoEM) map of Chikungunya virus-like particles (VLPs) has been interpreted using the previously published crystal structure of the Chikungunya E1-E2 glycoprotein heterodimer. The heterodimer structure was divided into domains to obtain a good fit to the cryoEM density ...

    A 5.3 Å resolution, cryo-electron microscopy (cryoEM) map of Chikungunya virus-like particles (VLPs) has been interpreted using the previously published crystal structure of the Chikungunya E1-E2 glycoprotein heterodimer. The heterodimer structure was divided into domains to obtain a good fit to the cryoEM density. Differences in the T = 4 quasi-equivalent heterodimer components show their adaptation to different environments. The spikes on the icosahedral 3-fold axes and those in general positions are significantly different, possibly representing different phases during initial generation of fusogenic E1 trimers. CryoEM maps of neutralizing Fab fragments complexed with VLPs have been interpreted using the crystal structures of the Fab fragments and the VLP structure. Based on these analyses the CHK-152 antibody was shown to stabilize the viral surface, hindering the exposure of the fusion-loop, likely neutralizing infection by blocking fusion. The CHK-9, m10 and m242 antibodies surround the receptor-attachment site, probably inhibiting infection by blocking cell attachment. DOI:http://dx.doi.org/10.7554/eLife.00435.001.


    Organizational Affiliation

    Department of Biological Sciences , Purdue University , West Lafayette , United States.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Glycoprotein E1A, C [auth B], E [auth C], G [auth D]393Chikungunya virus strain Senegal 37997Mutation(s): 0 
EC: 3.4.21.90
Find proteins for Q1H8W5 (Chikungunya virus)
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Go to UniProtKB:  Q1H8W5
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Glycoprotein E2B [auth M], D [auth N], F [auth O]336Chikungunya virus strain Senegal 37997Mutation(s): 0 
EC: 3.4.21.90
Find proteins for Q1H8W5 (Chikungunya virus)
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Glycoprotein E2H [auth P]336Chikungunya virus strain Senegal 37997Mutation(s): 0 
EC: 3.4.21.90
Find proteins for Q1H8W5 (Chikungunya virus)
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Go to UniProtKB:  Q1H8W5
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Glycoprotein E1I [auth E], K [auth F], M [auth G], O [auth H]46Chikungunya virus strain Senegal 37997Mutation(s): 0 
EC: 3.4.21.90
Find proteins for Q5XXP3 (Chikungunya virus (strain 37997))
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Glycoprotein E2J [auth Q], L [auth R], N [auth S], P [auth T]81Chikungunya virus strain Senegal 37997Mutation(s): 0 
EC: 3.4.21.90
Find proteins for Q5XXP3 (Chikungunya virus (strain 37997))
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Capsid proteinQ [auth I], R [auth J], S [auth K], T [auth L]149Chikungunya virus strain Senegal 37997Mutation(s): 0 
EC: 3.4.21.90
Find proteins for Q5XXP3 (Chikungunya virus (strain 37997))
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Go to UniProtKB:  Q5XXP3
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-04-24
    Type: Initial release
  • Version 1.1: 2016-06-08
    Changes: Structure summary
  • Version 1.2: 2018-07-18
    Changes: Data collection