7X2G

Cryo-EM structure of Coxsackievirus B1 empty particle in complex with nAb nAb 2E6 (CVB1-E:2E6)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.58 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis for the synergistic neutralization of coxsackievirus B1 by a triple-antibody cocktail.

Zheng, Q.Zhu, R.Yin, Z.Xu, L.Sun, H.Yu, H.Wu, Y.Jiang, Y.Huang, Q.Huang, Y.Zhang, D.Liu, L.Yang, H.He, M.Zhou, Z.Jiang, Y.Chen, Z.Zhao, H.Que, Y.Kong, Z.Zhou, L.Li, T.Zhang, J.Luo, W.Gu, Y.Cheng, T.Li, S.Xia, N.

(2022) Cell Host Microbe 30: 1279

  • DOI: https://doi.org/10.1016/j.chom.2022.08.001
  • Primary Citation of Related Structures:  
    7X2G, 7X2I, 7X2O, 7X2T, 7X2W, 7X35, 7X37, 7X38, 7X3C, 7X3D, 7X3E, 7X3F, 7X3Y, 7X40, 7X42, 7X46, 7X47, 7X49, 7X4K, 7X4M

  • PubMed Abstract: 

    Coxsackievirus B1 (CVB1) is an emerging pathogen associated with severe neonatal diseases including aseptic meningitis, myocarditis, and pancreatitis and also with the development of type 1 diabetes. We characterize the binding and therapeutic efficacies of three CVB1-specific neutralizing antibodies (nAbs) identified for their ability to inhibit host receptor engagement. High-resolution cryo-EM structures showed that these antibodies recognize different epitopes but with an overlapping region in the capsid VP2 protein and specifically the highly variable EF loop. Moreover, they perturb capsid-receptor interactions by binding various viral particle forms. Antibody combinations achieve synergetic neutralization via a stepwise capsid transition and virion disruption, indicating dynamic changes in the virion in response to multiple nAbs targeting the receptor-binding site. Furthermore, this three-antibody cocktail protects against lethal challenge in neonatal mice and limits pancreatitis and viral replication in a non-obese diabetic mouse model. These results illustrate the utility of nAbs for rational design of therapeutics against picornaviruses such as CVB.


  • Organizational Affiliation

    State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, School of Life Sciences & School of Public Health, Xiamen University, Xiamen, Fujian 361102, People's Republic of China.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
2E6 light chainA [auth L]107Mus musculusMutation(s): 0 
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
2E6 heavy chainB [auth H]119Mus musculusMutation(s): 0 
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Virion protein 1C [auth A]278Coxsackievirus B1Mutation(s): 0 
UniProt
Find proteins for W8GTF7 (Coxsackievirus B1)
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Go to UniProtKB:  W8GTF7
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UniProt GroupW8GTF7
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
VP2D [auth B]263Coxsackievirus B1Mutation(s): 0 
UniProt
Find proteins for A0A2S0RQC2 (Coxsackievirus B1)
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UniProt GroupA0A2S0RQC2
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
VP3E [auth C]238Coxsackievirus B1Mutation(s): 0 
EC: 3.4.22.29 (PDB Primary Data), 3.6.1.15 (PDB Primary Data), 3.4.22.28 (PDB Primary Data), 2.7.7.48 (PDB Primary Data)
UniProt
Find proteins for L7UV52 (Coxsackievirus B1)
Explore L7UV52 
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UniProt GroupL7UV52
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.58 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Not funded--

Revision History  (Full details and data files)

  • Version 1.0: 2022-09-28
    Type: Initial release
  • Version 1.1: 2022-10-05
    Changes: Database references