Novel inter-subunit contacts in Barley Stripe Mosaic Virus revealed by cryo-EM

Experimental Data Snapshot

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

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Novel Inter-Subunit Contacts in Barley Stripe Mosaic Virus Revealed by Cryo-Electron Microscopy.

Clare, D.K.Pechnikova, E.V.Skurat, E.V.Makarov, V.V.Sokolova, O.S.Solovyev, A.G.Orlova, E.V.

(2015) Structure 23: 1815

  • DOI: https://doi.org/10.1016/j.str.2015.06.028
  • Primary Citation of Related Structures:  
    5A79, 5A7A

  • PubMed Abstract: 

    Barley stripe mosaic virus (BSMV, genus Hordeivirus) is a rod-shaped single-stranded RNA virus similar to viruses of the structurally characterized and well-studied genus Tobamovirus. Here we report the first high-resolution structure of BSMV at 4.1 Å obtained by cryo-electron microscopy. We discovered that BSMV forms two types of virion that differ in the number of coat protein (CP) subunits per turn and interactions between the CP subunits. While BSMV and tobacco mosaic virus CP subunits have a similar fold and interact with RNA using conserved residues, the axial contacts between the CP of these two viral groups are considerably different. BSMV CP subunits lack substantial axial contacts and are held together by a previously unobserved lateral contact formed at the virion surface via an interacting loop, which protrudes from the CP hydrophobic core to the adjacent CP subunit. These data provide an insight into diversity in structural organization of helical viruses.

  • Organizational Affiliation

    A.N. Belozersky Institute of Physico-Chemical Biology, Moscow State University, 119992 Moscow, Russia.


Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CAPSID PROTEIN198Barley stripe mosaic virusMutation(s): 0 
Find proteins for P04866 (Barley stripe mosaic virus)
Explore P04866 
Go to UniProtKB:  P04866
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UniProt GroupP04866
Sequence Annotations
  • Reference Sequence

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Entity ID: 2
MoleculeChains LengthOrganismImage
RNAB [auth R]3Tobacco mosaic virus strain OM
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

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

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-09-02
    Type: Initial release
  • Version 1.1: 2015-10-07
    Changes: Other
  • Version 1.2: 2015-10-21
    Changes: Database references
  • Version 1.3: 2017-08-23
    Changes: Data collection, Refinement description