6ILN

Cryo-EM structure of full Echovirus 6 particle at PH 5.5


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Human Neonatal Fc Receptor Is the Cellular Uncoating Receptor for Enterovirus B.

Zhao, X.Zhang, G.Liu, S.Chen, X.Peng, R.Dai, L.Qu, X.Li, S.Song, H.Gao, Z.Yuan, P.Liu, Z.Li, C.Shang, Z.Li, Y.Zhang, M.Qi, J.Wang, H.Du, N.Wu, Y.Bi, Y.Gao, S.Shi, Y.Yan, J.Zhang, Y.Xie, Z.Wei, W.Gao, G.F.

(2019) Cell 177: 1553-1565.e16

  • DOI: https://doi.org/10.1016/j.cell.2019.04.035
  • Primary Citation of Related Structures:  
    6ILJ, 6ILK, 6ILL, 6ILM, 6ILN, 6ILO, 6ILP

  • PubMed Abstract: 

    Enterovirus B (EV-B), a major proportion of the genus Enterovirus in the family Picornaviridae, is the causative agent of severe human infectious diseases. Although cellular receptors for coxsackievirus B in EV-B have been identified, receptors mediating virus entry, especially the uncoating process of echovirus and other EV-B remain obscure. Here, we found that human neonatal Fc receptor (FcRn) is the uncoating receptor for major EV-B. FcRn binds to the virus particles in the "canyon" through its FCGRT subunit. By obtaining multiple cryo-electron microscopy structures at different stages of virus entry at atomic or near-atomic resolution, we deciphered the underlying mechanisms of enterovirus attachment and uncoating. These structures revealed that different from the attachment receptor CD55, binding of FcRn to the virions induces efficient release of "pocket factor" under acidic conditions and initiates the conformational changes in viral particle, providing a structural basis for understanding the mechanisms of enterovirus entry.


  • Organizational Affiliation

    National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC), 102206 Beijing, China; WHO WPRO Regional Polio Reference Laboratory, NHC Key Laboratory of Biosafety, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, 102206 Beijing, China.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Capsid protein VP1275Echovirus E6Mutation(s): 0 
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Capsid protein VP2252Echovirus E6Mutation(s): 0 
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Capsid protein VP3238Echovirus E6Mutation(s): 0 
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Capsid protein VP467Echovirus E6Mutation(s): 0 
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
SPH
Query on SPH

Download Ideal Coordinates CCD File 
E [auth A]SPHINGOSINE
C18 H37 N O2
WWUZIQQURGPMPG-MSOLQXFVSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Chinese Academy of SciencesChinaXDB29010000

Revision History  (Full details and data files)

  • Version 1.0: 2019-05-15
    Type: Initial release
  • Version 1.1: 2019-05-29
    Changes: Data collection, Database references
  • Version 1.2: 2019-06-05
    Changes: Data collection, Database references
  • Version 1.3: 2019-06-12
    Changes: Data collection, Database references
  • Version 1.4: 2019-11-06
    Changes: Data collection, Other