4HL8

Re-refinement of the vault ribonucleoprotein particle


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.354 
  • R-Value Work: 0.352 
  • R-Value Observed: 0.352 

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Literature

New features of vault architecture and dynamics revealed by novel refinement using the deformable elastic network approach.

Casanas, A.Querol-Audi, J.Guerra, P.Pous, J.Tanaka, H.Tsukihara, T.Verdaguer, N.Fita, I.

(2013) Acta Crystallogr D Biol Crystallogr 69: 1054-1061

  • DOI: 10.1107/S0907444913004472
  • Primary Citation of Related Structures:  
    4HL8

  • PubMed Abstract: 
  • The vault particle, with a molecular weight of about 10 MDa, is the largest ribonucleoprotein that has been described. The X-ray structure of intact rat vault has been solved at a resolution of 3.5 Å [Tanaka et al. (2009), Science, 323, 384-388], sho ...

    The vault particle, with a molecular weight of about 10 MDa, is the largest ribonucleoprotein that has been described. The X-ray structure of intact rat vault has been solved at a resolution of 3.5 Å [Tanaka et al. (2009), Science, 323, 384-388], showing an overall barrel-shaped architecture organized into two identical moieties, each consisting of 39 copies of the major vault protein (MVP). The model deposited in the PDB includes 39 MVP copies (half a vault) in the crystal asymmetric unit. A 2.1 Å resolution structure of the seven N-terminal repeats (R1-7) of MVP has also been determined [Querol-Audí et al. (2009), EMBO J. 28, 3450-3457], revealing important discrepancies with respect to the MVP models for repeats R1 and R2. Here, the re-refinement of the vault structure by incorporating the high-resolution information available for the R1-7 domains, using the deformable elastic network (DEN) approach and maintaining strict 39-fold noncrystallographic symmetry is reported. The new refinement indicates that at the resolution presently available the MVP shell can be described well as only one independent subunit organized with perfect D39 molecular symmetry. This refinement reveals that significant rearrangements occur in the N-terminus of MVP during the closing of the two vault halves and that the 39-fold symmetry breaks in the cap region. These results reflect the highly dynamic nature of the vault structure and represent a necessary step towards a better understanding of the biology and regulation of this particle.


    Related Citations: 
    • The structure of rat liver vault at 3.5 angstrom resolution.
      Tanaka, H., Kato, K., Yamashita, E., Sumizawa, T., Zhou, Y., Yao, M., Iwasaki, K., Yoshimura, M., Tsukihara, T.
      (2009) Science 323: 384

    Organizational Affiliation

    Institut de Biologia Molecular de Barcelona (CSIC), Parc Científic de Barcelona, Baldiri i Reixac 10, 08028 Barcelona, Spain.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Major vault proteinA861Rattus norvegicusMutation(s): 0 
Gene Names: Mvp
Find proteins for Q62667 (Rattus norvegicus)
Explore Q62667 
Go to UniProtKB:  Q62667
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.354 
  • R-Value Work: 0.352 
  • R-Value Observed: 0.352 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 702.246α = 90
b = 383.796β = 124.69
c = 598.48γ = 90
Software Package:
Software NamePurpose
CNSrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-06-05
    Type: Initial release