5WSN

Structure of Japanese encephalitis virus


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.30 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

Near-atomic structure of Japanese encephalitis virus reveals critical determinants of virulence and stability

Wang, X.Li, S.H.Zhu, L.Nian, Q.G.Yuan, S.Gao, Q.Hu, Z.Ye, Q.Li, X.F.Xie, D.Y.Shaw, N.Wang, J.Walter, T.S.Huiskonen, J.T.Fry, E.E.Qin, C.F.Stuart, D.I.Rao, Z.

(2017) Nat Commun 8: 14-14

  • DOI: 10.1038/s41467-017-00024-6
  • Primary Citation of Related Structures:  
    5WSN

  • PubMed Abstract: 
  • Although several different flaviviruses may cause encephalitis, Japanese encephalitis virus is the most significant, being responsible for thousands of deaths each year in Asia. The structural and molecular basis of this encephalitis is not fully understood ...

    Although several different flaviviruses may cause encephalitis, Japanese encephalitis virus is the most significant, being responsible for thousands of deaths each year in Asia. The structural and molecular basis of this encephalitis is not fully understood. Here, we report the cryo-electron microscopy structure of mature Japanese encephalitis virus at near-atomic resolution, which reveals an unusual "hole" on the surface, surrounded by five encephalitic-specific motifs implicated in receptor binding. Glu138 of E, which is highly conserved in encephalitic flaviviruses, maps onto one of these motifs and is essential for binding to neuroblastoma cells, with the E138K mutation abrogating the neurovirulence and neuroinvasiveness of Japanese encephalitis virus in mice. We also identify structural elements modulating viral stability, notably Gln264 of E, which, when replaced by His264 strengthens a hydrogen-bonding network, leading to a more stable virus. These studies unveil determinants of neurovirulence and stability in Japanese encephalitis virus, opening up new avenues for therapeutic interventions against neurotropic flaviviruses.Japanese encephalitis virus (JEV) is a Flavivirus responsible for thousands of deaths every year for which there are no specific anti-virals. Here, Wang et al. report the cryo-EM structure of mature JEV at near-atomic resolution and identify structural elements that modulate stability and virulence.


    Organizational Affiliation

    Laboratory of Structural Biology, School of Medicine, Tsinghua University, Beijing, 100084, China. raozh@xtal.tsinghua.edu.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
E proteinA, C, E500Japanese encephalitis virusMutation(s): 0 
EC: 3.4.21.91 (UniProt), 3.6.1.15 (UniProt), 3.6.4.13 (UniProt)
UniProt
Find proteins for A1E4C6 (Japanese encephalitis virus)
Explore A1E4C6 
Go to UniProtKB:  A1E4C6
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
M proteinB, D, F74Japanese encephalitis virusMutation(s): 0 
EC: 3.4.21.91 (UniProt), 3.6.1.15 (UniProt), 3.6.4.13 (UniProt), 2.1.1.56 (UniProt), 2.1.1.57 (UniProt), 2.7.7.48 (UniProt)
UniProt
Find proteins for P27395 (Japanese encephalitis virus (strain SA-14))
Explore P27395 
Go to UniProtKB:  P27395
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina31570717

Revision History  (Full details and data files)

  • Version 1.0: 2017-05-17
    Type: Initial release
  • Version 1.1: 2019-11-06
    Changes: Data collection, Other