6ILM

Cryo-EM structure of Echovirus 6 complexed with its uncoating receptor FcRn at PH 7.4


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

  • 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 media ...

    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

    CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, 100101 Beijing, China; CAS Center for Influenza Research and Early-Warning (CASCIRE), Chinese Academy of Sciences, 100101 Beijing, China; Research Network of Immunity and Health (RNIH), Beijing Institutes of Life Science, Chinese Academy of Sciences, 100101 Beijing, China; National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC), 102206 Beijing, China; Savaid Medical School, University of Chinese Academy of Sciences, 100049 Beijing, China. Electronic address: gaof@im.ac.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-2-microglobulinF99Homo sapiensMutation(s): 0 
Gene Names: B2MCDABP0092HDCMA22P
Find proteins for P61769 (Homo sapiens)
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Go to UniProtKB:  P61769
NIH Common Fund Data Resources
PHAROS  P61769
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  • Reference Sequence
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Capsid protein VP1A289Echovirus E6Mutation(s): 0 
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Capsid protein VP2B252Echovirus E6Mutation(s): 0 
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Capsid protein VP3C238Echovirus E6Mutation(s): 0 
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Capsid protein VP4D68Echovirus E6Mutation(s): 0 
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  • Reference Sequence
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
IgG receptor FcRn large subunit p51E263Homo sapiensMutation(s): 0 
Gene Names: FCRNFCGRT
Find proteins for P55899 (Homo sapiens)
Explore P55899 
Go to UniProtKB:  P55899
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PHAROS  P55899
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SPH
Query on SPH

Download CCD File 
A
SPHINGOSINE
C18 H37 N O2
WWUZIQQURGPMPG-MSOLQXFVSA-N
 Ligand Interaction
K
Query on K

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A
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
NA
Query on NA

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D
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
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 

  • 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