Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

Global Symmetry: Icosahedral - I  (3D View)
Global Stoichiometry: Homo 240-mer - A240 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: native gel electrophoresis

Macromolecule Content

• Total Structure Weight: 55.48 kDa 
• Atom Count: 2052 
• Modelled Residue Count: 512 
• Deposited Residue Count: 520 
• Unique protein chains: 1

6RRT

T=4 MS2 Virus-like-particle

• PDB DOI: 10.2210/pdb6RRT/pdb
• EM Map EMD-4990:EMDBEMDataResource

• Classification: VIRUS LIKE PARTICLE
• Organism(s): Escherichia virus MS2
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2019-05-20 Released: 2020-07-08 
• Deposition Author(s): de Martin Garrido, N., Ramlaul, K., Simpson, P.A., Crone, M.A., Freemont, P.S., Aylett, C.H.S.
• Funding Organization(s): Wellcome Trust, Royal Society

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 6.00 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Bacteriophage MS2 displays unreported capsid variability assembling T = 4 and mixed capsids.

de Martin Garrido, N., Crone, M.A., Ramlaul, K., Simpson, P.A., Freemont, P.S., Aylett, C.H.S.

(2020) Mol Microbiol 113: 143-152

• PubMed: 31618483 
• DOI: 10.1111/mmi.14406
• Primary Citation of Related Structures:  
  6RRS, 6RRT


• PubMed Abstract: 
  

Bacteriophage MS2 is a positive-sense, single-stranded RNA virus encapsulated in an asymmetric T = 3 pseudo-icosahedral capsid. It infects Escherichia coli through the F-pilus, in which it binds through a maturation protein incorporated into its capsid. Cryogenic electron microscopy has previously shown that its genome is highly ordered within virions, and that it regulates the assembly process of the capsid. In this study, we have assembled recombinant MS2 capsids with non-genomic RNA containing the capsid incorporation sequence, and investigated the structures formed, revealing that T = 3, T = 4 and mixed capsids between these two triangulation numbers are generated, and resolving structures of T = 3 and T = 4 capsids to 4 Å and 6 Å respectively. We conclude that the basic MS2 capsid can form a mix of T = 3 and T = 4 structures, supporting a role for the ordered genome in favouring the formation of functional T = 3 virions.

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Organizational Affiliation: 

Section of Structural and Synthetic Biology, Department of Infectious Disease, Imperial College London, London, SW7 2AZ, UK.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Capsid protein	A, B, C, D	130	Escherichia virus MS2	Mutation(s): 0
UniProt
Find proteins for P03612 (Escherichia phage MS2) Explore P03612  Go to UniProtKB:  P03612

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 6.00 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2019-05-20 
• Released Date: 2020-07-08 
Deposition Author(s): de Martin Garrido, N., Ramlaul, K., Simpson, P.A., Crone, M.A., Freemont, P.S., Aylett, C.H.S.

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Funding Organization	Location	Grant Number
Wellcome Trust	United Kingdom	206212_Z_17_Z
Royal Society	United Kingdom	206212_Z_17_Z

Revision History  

• Version 1.0: 2020-07-08
  Type: Initial release
  
• Version 1.1: 2020-07-22
  Changes: Database references