4ZPY

Structure of N170A MVM mutant empty capsid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.80 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.282 

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This is version 1.2 of the entry. See complete history


Literature

Structural basis for biologically relevant mechanical stiffening of a virus capsid by cavity-creating or spacefilling mutations.

Guerra, P.Valbuena, A.Querol-Audi, J.Silva, C.Castellanos, M.Rodriguez-Huete, A.Garriga, D.Mateu, M.G.Verdaguer, N.

(2017) Sci Rep 7: 4101-4101

  • DOI: 10.1038/s41598-017-04345-w
  • Primary Citation of Related Structures:  
    4ZPY

  • PubMed Abstract: 
  • Recent studies reveal that the mechanical properties of virus particles may have been shaped by evolution to facilitate virus survival. Manipulation of the mechanical behavior of virus capsids is leading to a better understanding of viral infection, and to the development of virus-based nanoparticles with improved mechanical properties for nanotechnological applications ...

    Recent studies reveal that the mechanical properties of virus particles may have been shaped by evolution to facilitate virus survival. Manipulation of the mechanical behavior of virus capsids is leading to a better understanding of viral infection, and to the development of virus-based nanoparticles with improved mechanical properties for nanotechnological applications. In the minute virus of mice (MVM), deleterious mutations around capsid pores involved in infection-related translocation events invariably increased local mechanical stiffness and interfered with pore-associated dynamics. To provide atomic-resolution insights into biologically relevant changes in virus capsid mechanics, we have determined by X-ray crystallography the structural effects of deleterious, mechanically stiffening mutations around the capsid pores. Data show that the cavity-creating N170A mutation at the pore wall does not induce any dramatic structural change around the pores, but instead generates subtle rearrangements that propagate throughout the capsid, resulting in a more compact, less flexible structure. Analysis of the spacefilling L172W mutation revealed the same relationship between increased stiffness and compacted capsid structure. Implications for understanding connections between virus mechanics, structure, dynamics and infectivity, and for engineering modified virus-based nanoparticles, are discussed.


    Organizational Affiliation

    Structural Biology Unit, Institut de Biologia Molecular de Barcelona (CSIC). Parc Científic de Barcelona, Baldiri i Reixac 15, E-08028, Barcelona, Spain. nvmcri@ibmb.csic.es.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
VP1 protein A549Murine minute virus strain MVM prototypeMutation(s): 1 
Gene Names: VP1
Find proteins for P03137 (Murine minute virus (strain MVM prototype))
Explore P03137 
Go to UniProtKB:  P03137
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.80 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.282 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 410.19α = 90
b = 410.19β = 90
c = 559.7γ = 120
Software Package:
Software NamePurpose
Aimlessdata scaling
PHASERphasing
DMphasing
CNSrefinement
PDB_EXTRACTdata extraction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-05-24
    Type: Initial release
  • Version 1.1: 2017-05-31
    Changes: Database references
  • Version 1.2: 2017-07-12
    Changes: Database references