4CTF

The limits of structural plasticity in a picornavirus capsid revealed by a massively expanded equine rhinitis A virus particle


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 17.0 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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This is version 1.4 of the entry. See complete history


Literature

Limits of Structural Plasticity in a Picornavirus Capsid Revealed by a Massively Expanded Equine Rhinitis a Virus Particle.

Bakker, S.E.Groppelli, E.Pearson, A.R.Stockley, P.G.Rowlands, D.J.Ranson, N.A.

(2014) J Virol 88: 6093

  • DOI: 10.1128/JVI.01979-13
  • Primary Citation of Related Structures:  
    4CTF, 4CTG

  • PubMed Abstract: 
  • The Picornaviridae family of small, nonenveloped viruses includes major pathogens of humans and animals. They have positive-sense, single-stranded RNA genomes, and the mechanism(s) by which these genomes are introduced into cells to initiate infection remains poorly understood ...

    The Picornaviridae family of small, nonenveloped viruses includes major pathogens of humans and animals. They have positive-sense, single-stranded RNA genomes, and the mechanism(s) by which these genomes are introduced into cells to initiate infection remains poorly understood. The structures of presumed uncoating intermediate particles of several picornaviruses show limited expansion and some increased porosity compared to the mature virions. Here, we present the cryo-electron microscopy structure of native equine rhinitis A virus (ERAV), together with the structure of a massively expanded ERAV particle, each at ∼17-Å resolution. The expanded structure has large pores on the particle 3-fold axes and has lost the RNA genome and the capsid protein VP4. The expanded structure thus illustrates both the limits of structural plasticity in such capsids and a plausible route by which genomic RNA might exit.


    Organizational Affiliation

    Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, United Kingdom.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
VP1246Equine rhinitis A virusMutation(s): 0 
UniProt
Find proteins for A2TJ51 (Equine rhinitis A virus)
Explore A2TJ51 
Go to UniProtKB:  A2TJ51
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA2TJ51
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
EQUINE RHINITIS A VIRUS230Equine rhinitis A virusMutation(s): 0 
Gene Names: P1
UniProt
Find proteins for Q91B42 (Equine rhinitis A virus)
Explore Q91B42 
Go to UniProtKB:  Q91B42
Entity Groups  
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UniProt GroupQ91B42
Protein Feature View
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
P1226Equine rhinitis A virusMutation(s): 0 
Gene Names: P1
UniProt
Find proteins for Q91B37 (Equine rhinitis A virus)
Explore Q91B37 
Go to UniProtKB:  Q91B37
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UniProt GroupQ91B37
Protein Feature View
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
P180Equine rhinitis A virusMutation(s): 0 
UniProt
Find proteins for B9VV85 (Equine rhinitis A virus)
Explore B9VV85 
Go to UniProtKB:  B9VV85
Entity Groups  
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UniProt GroupB9VV85
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 17.0 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: 2014-05-21
    Type: Initial release
  • Version 1.1: 2014-05-28
    Changes: Other
  • Version 1.2: 2014-12-10
    Changes: Other
  • Version 1.3: 2017-08-23
    Changes: Data collection
  • Version 1.4: 2019-12-18
    Changes: Other