7MRY

Norovirus T=3 GII.4 HOV VLP

  • Classification: VIRUS
  • Organism(s): Norovirus GII.4
  • Expression System: Trichoplusia ni
  • Mutation(s): No 

  • Deposited: 2021-05-10 Released: 2022-03-02 
  • Deposition Author(s): Salmen, W., Hu, L., Prasad, B.
  • Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Atomic structure of the predominant GII.4 human norovirus capsid reveals novel stability and plasticity.

Hu, L.Salmen, W.Chen, R.Zhou, Y.Neill, F.Crowe Jr., J.E.Atmar, R.L.Estes, M.K.Prasad, B.V.V.

(2022) Nat Commun 13: 1241-1241

  • DOI: https://doi.org/10.1038/s41467-022-28757-z
  • Primary Citation of Related Structures:  
    7MRY

  • PubMed Abstract: 

    Human noroviruses (HuNoVs) cause sporadic and epidemic viral gastroenteritis worldwide. The GII.4 variants are responsible for most HuNoV infections, and GII.4 virus-like particles (VLPs) are being used in vaccine development. The atomic structure of the GII.4 capsid in the native T = 3 state has not been determined. Here we present the GII.4 VLP structure with T = 3 symmetry determined using X-ray crystallography and cryo-EM at 3.0 Å and 3.8 Å resolution, respectively, which reveals unanticipated novel features. A novel aspect in the crystal structure determined without imposing icosahedral symmetry is the remarkable adaptability of the capsid protein VP1 driven by the flexible hinge between the shell and the protruding domains. In both crystal and cryo-EM structures, VP1 adopts a stable conformation with the protruding domain resting on the shell domain, in contrast to the 'rising' conformation observed in recent cryo-EM structures of other GII.4 VLPs. Our studies further revealed that the resting state of VP1 dimer is stabilized by a divalent ion, and chelation using EDTA increases capsid diameter, exposing new hydrophobic and antigenic sites and suggesting a transition to the rising conformation. These novel insights into GII.4 capsid structure, stability, and antigen presentation may be useful for ongoing vaccine development.


  • Organizational Affiliation

    Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
VP1
A, B, C
540Norovirus GII.4Mutation(s): 0 
UniProt
Find proteins for A9YYE4 (Norovirus Hu/Houston/TCH186/2002/US)
Explore A9YYE4 
Go to UniProtKB:  A9YYE4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA9YYE4
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONcryoSPARC2.15.0

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesAI057788

Revision History  (Full details and data files)

  • Version 1.0: 2022-03-02
    Type: Initial release
  • Version 1.1: 2023-03-15
    Changes: Database references
  • Version 1.2: 2024-05-29
    Changes: Data collection