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
  • Structures With Same Primary Citation

  • 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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Capsid protein VP1
A
289Echovirus E6Mutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Capsid protein VP2
B
252Echovirus E6Mutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Capsid protein VP3
C
238Echovirus E6Mutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.

Find similar proteins by: Sequence  |  Structure

Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Capsid protein VP4
D
68Echovirus E6Mutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.

Find similar proteins by: Sequence  |  Structure

Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
IgG receptor FcRn large subunit p51
E
263Homo sapiensMutation(s): 0 
Gene Names: FCRNFCGRT
Find proteins for P55899 (Homo sapiens)
Go to UniProtKB:  P55899
NIH Common Fund Data Resources
PHAROS  P55899

Find similar proteins by: Sequence  |  Structure

Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
Beta-2-microglobulin
F
99Homo sapiensMutation(s): 0 
Gene Names: B2MCDABP0092HDCMA22P
Find proteins for P61769 (Homo sapiens)
Go to UniProtKB:  P61769
NIH Common Fund Data Resources
PHAROS  P61769
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

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

Download CCD File 
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