Biological Assembly 1  

 3D View: Structure

Global Symmetry: Icosahedral - I  (3D View)
Global Stoichiometry: Hetero 120-mer - A60B60 

Biological assembly 1 assigned by authors and generated by (software)

Macromolecule Content

• Total Structure Weight: 61.82 kDa 
• Atom Count: 4333 
• Modelled Residue Count: 557 
• Deposited Residue Count: 558 
• Unique protein chains: 2

5A32

Electron cryo-microscopy of Cowpea Mosaic Virus containing RNA-1 (CPMVb)

• DOI: 10.2210/pdb5A32/pdb
• EMDataResource: EMD-3013

• Classification: VIRUS
• Organism(s): Cowpea mosaic virus
• Mutation(s): No 


• Deposited: 2015-05-27 Released: 2015-12-23 
• Deposition Author(s): Hesketh, E.L., Meshcheriakova, Y., Dent, K.C., Saxena, P., Thompson, R., Cockburn, J.J., Lomonossoff, G.P., Ranson, N.A.

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.44 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Mechanisms of assembly and genome packaging in an RNA virus revealed by high-resolution cryo-EM.

Hesketh, E.L., Meshcheriakova, Y., Dent, K.C., Saxena, P., Thompson, R.F., Cockburn, J.J., Lomonossoff, G.P., Ranson, N.A.

(2015) Nat Commun 6: 10113-10113

• PubMed: 26657148 
• DOI: 10.1038/ncomms10113
• Primary Citation of Related Structures:  
  5A32, 5A33


• PubMed Abstract: 
  

Cowpea mosaic virus is a plant-infecting member of the Picornavirales and is of major interest in the development of biotechnology applications. Despite the availability of >100 crystal structures of Picornavirales capsids, relatively little is known about the mechanisms of capsid assembly and genome encapsidation. Here we have determined cryo-electron microscopy reconstructions for the wild-type virus and an empty virus-like particle, to 3.4 Å and 3.0 Å resolution, respectively, and built de novo atomic models of their capsids. These new structures reveal the C-terminal region of the small coat protein subunit, which is essential for virus assembly and which was missing from previously determined crystal structures, as well as residues that bind to the viral genome. These observations allow us to develop a new model for genome encapsidation and capsid assembly.

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Organizational Affiliation: 

Astbury Centre for Structural Molecular Biology, University of Leeds, Mount Preston Street, Leeds LS2 9JT, UK.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RNA2 POLYPROTEIN	A	189	Cowpea mosaic virus	Mutation(s): 0
UniProt
Find proteins for P03599 (Cowpea mosaic virus (strain SB)) Explore P03599  Go to UniProtKB:  P03599

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
RNA2 POLYPROTEIN	B	369	Cowpea mosaic virus	Mutation(s): 0
UniProt
Find proteins for P03599 (Cowpea mosaic virus (strain SB)) Explore P03599  Go to UniProtKB:  P03599

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.44 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2015-05-27 
• Released Date: 2015-12-23 
Deposition Author(s): Hesketh, E.L., Meshcheriakova, Y., Dent, K.C., Saxena, P., Thompson, R., Cockburn, J.J., Lomonossoff, G.P., Ranson, N.A.

Revision History  

• Version 1.0: 2015-12-23
  Type: Initial release
  
• Version 1.1: 2017-04-19
  Changes: Database references, Other
• Version 1.2: 2017-08-30
  Changes: Data collection, Refinement description