8X95

Cryo-EM structure of enterovirus A71 mature virion in complex with Fab h1A6.2


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.52 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

Broadly therapeutic antibody provides cross-serotype protection against enteroviruses via Fc effector functions and by mimicking SCARB2.

Zhu, R.Wu, Y.Huang, Y.Jiang, Y.Jiang, Y.Zhang, D.Sun, H.Zhou, Z.Zhou, L.Weng, S.Chen, H.Chen, X.Ning, W.Zou, Y.He, M.Yang, H.Deng, W.Li, Y.Chen, Z.Ye, X.Han, J.Yin, Z.Zhao, H.Liu, C.Que, Y.Fang, M.Yu, H.Zhang, J.Luo, W.Li, S.Zheng, Q.Xu, L.Xia, N.Cheng, T.

(2024) Nat Microbiol 9: 2939-2953

  • DOI: https://doi.org/10.1038/s41564-024-01822-7
  • Primary Citation of Related Structures:  
    8X95, 8X96, 8X97, 8X98, 8X99, 8X9A, 8X9B, 8YTB, 8YTJ

  • PubMed Abstract: 

    Enteroviruses contain multiple serotypes and can cause severe neurological complications. The intricate life cycle of enteroviruses involving dynamic virus-receptor interaction hampers the development of broad therapeutics and vaccines. Here, using function-based screening, we identify a broadly therapeutic antibody h1A6.2 that potently protects mice in lethal models of infection with both enterovirus A71 and coxsackievirus A16 through multiple mechanisms, including inhibition of the virion-SCARB2 interactions and monocyte/macrophage-dependent Fc effector functions. h1A6.2 mitigates inflammation and improves intramuscular mechanics, which are associated with diminished innate immune signalling and preserved tissue repair. Moreover, cryogenic electron microscopy structures delineate an adaptive binding of h1A6.2 to the flexible and dynamic nature of the VP2 EF loop with a binding angle mimicking the SCARB2 receptor. The coordinated binding mode results in efficient binding of h1A6.2 to all viral particle types and facilitates broad neutralization of enterovirus, therefore informing a promising target for the structure-guided design of pan-enterovirus vaccine.


  • Organizational Affiliation

    State Key Laboratory of Vaccines for Infectious Diseases, Xiang An Biomedicine Laboratory, School of Life Sciences, School of Public Health, Xiamen University, Xiamen, PR China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Capsid protein VP1297Enterovirus A71Mutation(s): 0 
UniProt
Find proteins for A0A075QAW4 (Human enterovirus 71)
Explore A0A075QAW4 
Go to UniProtKB:  A0A075QAW4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A075QAW4
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Capsid protein VP2254Enterovirus A71Mutation(s): 0 
UniProt
Find proteins for A0A075QAW4 (Human enterovirus 71)
Explore A0A075QAW4 
Go to UniProtKB:  A0A075QAW4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A075QAW4
Sequence Annotations
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Capsid protein VP3242Enterovirus A71Mutation(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 A0A075QAW4 (Human enterovirus 71)
Explore A0A075QAW4 
Go to UniProtKB:  A0A075QAW4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A075QAW4
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Capsid protein VP469Enterovirus A71Mutation(s): 0 
UniProt
Find proteins for A0A075QAW4 (Human enterovirus 71)
Explore A0A075QAW4 
Go to UniProtKB:  A0A075QAW4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A075QAW4
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.52 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Not funded--

Revision History  (Full details and data files)

  • Version 1.0: 2024-09-04
    Type: Initial release
  • Version 1.1: 2025-01-15
    Changes: Data collection, Database references, Structure summary