Kinetic and Structural Analysis of Coxsackievirus B3 Receptor Interactions and Formation of the A-particle

Experimental Data Snapshot

  • Resolution: 9.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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Kinetic and structural analysis of coxsackievirus b3 receptor interactions and formation of the a-particle.

Organtini, L.J.Makhov, A.M.Conway, J.F.Hafenstein, S.Carson, S.D.

(2014) J Virol 88: 5755-5765

  • DOI: https://doi.org/10.1128/JVI.00299-14
  • Primary Citation of Related Structures:  
    3J6L, 3J6M, 3J6N, 3J6O

  • PubMed Abstract: 

    The coxsackievirus and adenovirus receptor (CAR) has been identified as the cellular receptor for group B coxsackieviruses, including serotype 3 (CVB3). CAR mediates infection by binding to CVB3 and catalyzing conformational changes in the virus that result in formation of the altered, noninfectious A-particle. Kinetic analyses show that the apparent first-order rate constant for the inactivation of CVB3 by soluble CAR (sCAR) at physiological temperatures varies nonlinearly with sCAR concentration. Cryo-electron microscopy (cryo-EM) reconstruction of the CVB3-CAR complex resulted in a 9.0-Å resolution map that was interpreted with the four available crystal structures of CAR, providing a consensus footprint for the receptor binding site. The analysis of the cryo-EM structure identifies important virus-receptor interactions that are conserved across picornavirus species. These conserved interactions map to variable antigenic sites or structurally conserved regions, suggesting a combination of evolutionary mechanisms for receptor site preservation. The CAR-catalyzed A-particle structure was solved to a 6.6-Å resolution and shows significant rearrangement of internal features and symmetric interactions with the RNA genome.

  • Organizational Affiliation

    Department of Medicine, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Coxsackievirus and adenovirus receptorA [auth B]124Homo sapiensMutation(s): 0 
Gene Names: CXADRCAR
UniProt & NIH Common Fund Data Resources
Find proteins for P78310 (Homo sapiens)
Explore P78310 
Go to UniProtKB:  P78310
PHAROS:  P78310
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP78310
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 9.00 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-04-09
    Type: Initial release
  • Version 1.1: 2014-05-07
    Changes: Database references
  • Version 1.2: 2018-07-18
    Changes: Data collection