2WBH

Icosahedral particle of covalent coat protein dimer of bacteriophage MS2

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.70 Å
  • R-Value Work: 0.318 
  • R-Value Observed: 0.318 

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This is version 1.2 of the entry. See complete history. 


Literature

Structure and Stability of Icosahedral Particles of a Covalent Coat Protein Dimer of Bacteriophage MS2.

Plevka, P., Tars, K., Liljas, L.

(2009) Protein Sci 18: 1653

  • DOI: 10.1002/pro.184
  • Primary Citation of Related Structures:  
    2WBH

  • PubMed Abstract: 

    • Particles formed by the bacteriophage MS2 coat protein mutants with insertions in their surface loops induce a strong immune response against the inserted epitopes. The covalent dimers created by fusion of two copies of the coat protein gene are more tolerant to various insertions into the surface loops than the single subunits ...

    Particles formed by the bacteriophage MS2 coat protein mutants with insertions in their surface loops induce a strong immune response against the inserted epitopes. The covalent dimers created by fusion of two copies of the coat protein gene are more tolerant to various insertions into the surface loops than the single subunits. We determined a 4.7-A resolution crystal structure of an icosahedral particle assembled from covalent dimers and compared its stability with wild-type virions. The structure resembled the wild-type virion except for the intersubunit linker regions. The covalent dimer orientation was random with respect to both icosahedral twofold and quasi-twofold symmetry axes. A fraction of the particles was unstable in phosphate buffer because of assembly defects. Our results provide a structural background for design of modified covalent coat protein dimer subunits for use in immunization.

    Organizational Affiliation: 

    Department of Cell and Molecular Biology, Uppsala University, SE-751 24 Uppsala, Sweden. pp2cz@yahoo.com



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
COAT PROTEINA, B, C257Escherichia virus MS2Mutation(s): 0 
UniProt
Find proteins for P03612 (Escherichia phage MS2)
Explore P03612 
Go to UniProtKB:  P03612
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03612
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.70 Å
  • R-Value Work: 0.318 
  • R-Value Observed: 0.318 
  • Space Group: P 21 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 368.2α = 90
b = 368.2β = 90
c = 368.2γ = 90
Software Package:
Software NamePurpose
CNSrefinement
HKL-2000data reduction
SCALEPACKdata scaling
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-11-24
    Type: Initial release
  • Version 1.1: 2014-08-13
    Changes: Refinement description, Version format compliance
  • Version 1.2: 2019-04-10
    Changes: Data collection, Other, Source and taxonomy