6ZTY

Assembly intermediates of orthoreovirus captured in the cell


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Aggregation State: CELL 
  • Reconstruction Method: TOMOGRAPHY 

wwPDB Validation   3D Report Full Report


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Literature

Assembly intermediates of orthoreovirus captured in the cell.

Sutton, G.Sun, D.Fu, X.Kotecha, A.Hecksel, C.W.Clare, D.K.Zhang, P.Stuart, D.I.Boyce, M.

(2020) Nat Commun 11: 4445-4445

  • DOI: 10.1038/s41467-020-18243-9
  • Primary Citation of Related Structures:  
    6ZTY, 6ZTZ, 6ZTS, 6XF7, 6XF8

  • PubMed Abstract: 
  • Traditionally, molecular assembly pathways for viruses are inferred from high resolution structures of purified stable intermediates, low resolution images of cell sections and genetic approaches. Here, we directly visualise an unsuspected 'single shelled' intermediate for a mammalian orthoreovirus in cryo-preserved infected cells, by cryo-electron tomography of cellular lamellae ...

    Traditionally, molecular assembly pathways for viruses are inferred from high resolution structures of purified stable intermediates, low resolution images of cell sections and genetic approaches. Here, we directly visualise an unsuspected 'single shelled' intermediate for a mammalian orthoreovirus in cryo-preserved infected cells, by cryo-electron tomography of cellular lamellae. Particle classification and averaging yields structures to 5.6 Å resolution, sufficient to identify secondary structural elements and produce an atomic model of the intermediate, comprising 120 copies each of protein λ1 and σ2. This λ1 shell is 'collapsed' compared to the mature virions, with molecules pushed inwards at the icosahedral fivefolds by ~100 Å, reminiscent of the first assembly intermediate of certain prokaryotic dsRNA viruses. This supports the supposition that these viruses share a common ancestor, and suggests mechanisms for the assembly of viruses of the Reoviridae. Such methodology holds promise for dissecting the replication cycle of many viruses.


    Organizational Affiliation

    Division of Structural Biology, Wellcome Centre for Human Genetics, University of Oxford, Oxford, OX3 7BN, UK. mark.boyce@strubi.ox.ac.uk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Outer capsid protein mu-1 HIJ641Reovirus sp.Mutation(s): 0 
Find proteins for P11077 (Reovirus type 1 (strain Lang))
Explore P11077 
Go to UniProtKB:  P11077
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Outer capsid protein sigma-3 UVW365Reovirus sp.Mutation(s): 0 
Find proteins for P07939 (Reovirus type 1 (strain Lang))
Explore P07939 
Go to UniProtKB:  P07939
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Aggregation State: CELL 
  • Reconstruction Method: TOMOGRAPHY 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Medical Research Council (MRC, United Kingdom)United KingdomMR/N00065X/1
Wellcome TrustUnited Kingdom206422/Z/17/Z

Revision History  (Full details and data files)

  • Version 1.0: 2020-09-16
    Type: Initial release