Protrusion structure of Omono River virus

Experimental Data Snapshot

  • Resolution: 4.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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This is version 1.2 of the entry. See complete history


Cryo-EM reveals a previously unrecognized structural protein of a dsRNA virus implicated in its extracellular transmission.

Shao, Q.Jia, X.Gao, Y.Liu, Z.Zhang, H.Tan, Q.Zhang, X.Zhou, H.Li, Y.Zhang, Q.

(2021) PLoS Pathog 17: e1009396-e1009396

  • DOI: https://doi.org/10.1371/journal.ppat.1009396
  • Primary Citation of Related Structures:  
    7CZ6, 7D0K, 7D0L

  • PubMed Abstract: 

    Mosquito viruses cause unpredictable outbreaks of disease. Recently, several unassigned viruses isolated from mosquitoes, including the Omono River virus (OmRV), were identified as totivirus-like viruses, with features similar to those of the Totiviridae family. Most reported members of this family infect fungi or protozoans and lack an extracellular life cycle stage. Here, we identified a new strain of OmRV and determined high-resolution structures for this virus using single-particle cryo-electron microscopy. The structures feature an unexpected protrusion at the five-fold vertex of the capsid. Disassociation of the protrusion could result in several conformational changes in the major capsid. All these structures, together with some biological results, suggest the protrusions' associations with the extracellular transmission of OmRV.

  • Organizational Affiliation

    State Key Lab for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Capsid proteinA [auth C]126Omono River virusMutation(s): 0 
Find proteins for A0A7M3VBX7 (Omono River virus)
Explore A0A7M3VBX7 
Go to UniProtKB:  A0A7M3VBX7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A7M3VBX7
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 4.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China31570736

Revision History  (Full details and data files)

  • Version 1.0: 2021-03-03
    Type: Initial release
  • Version 1.1: 2021-03-31
    Changes: Database references
  • Version 1.2: 2024-03-27
    Changes: Data collection, Database references, Derived calculations