Rosellinia necatrix megabirnavirus 1-W779 full capsid

Experimental Data Snapshot

  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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Capsid structure of a fungal dsRNA megabirnavirus reveals its previously unidentified surface architecture.

Wang, H.Salaipeth, L.Miyazaki, N.Suzuki, N.Okamoto, K.

(2023) PLoS Pathog 19: e1011162-e1011162

  • DOI: https://doi.org/10.1371/journal.ppat.1011162
  • Primary Citation of Related Structures:  
    8B4Z, 8B59

  • PubMed Abstract: 

    Rosellinia necatrix megabirnavirus 1-W779 (RnMBV1) is a non-enveloped icosahedral double-stranded (ds)RNA virus that infects the ascomycete fungus Rosellinia necatrix, a causative agent that induces a lethal plant disease white root rot. Herein, we have first resolved the atomic structure of the RnMBV1 capsid at 3.2 Å resolution using cryo-electron microscopy (cryo-EM) single-particle analysis. Compared with other non-enveloped icosahedral dsRNA viruses, the RnMBV1 capsid protein structure exhibits an extra-long C-terminal arm and a surface protrusion domain. In addition, the previously unrecognized crown proteins are identified in a symmetry-expanded cryo-EM model and are present over the 3-fold axes. These exclusive structural features of the RnMBV1 capsid could have been acquired for playing essential roles in transmission and/or particle assembly of the megabirnaviruses. Our findings, therefore, will reinforce the understanding of how the structural and molecular machineries of the megabirnaviruses influence the virulence of the disease-related ascomycete fungus.

  • Organizational Affiliation

    The Laboratory of Molecular Biophysics, Department of Cell and Molecular Biology, Uppsala University, Uppsala, Sweden.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Major capsid protein A
A, B
1,240Rosellinia necatrix megabirnavirus 1/W779Mutation(s): 0 
Find proteins for D0FZL0 (Rosellinia necatrix megabirnavirus 1 (isolate -/Japan/W779/2001))
Explore D0FZL0 
Go to UniProtKB:  D0FZL0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupD0FZL0
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Swedish Research CouncilSweden--
Ministry of Education, Culture, Sports, Science and Technology (Japan)Japan--

Revision History  (Full details and data files)

  • Version 1.0: 2023-02-22
    Type: Initial release
  • Version 1.1: 2023-03-29
    Changes: Database references