English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/110039
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Preliminary analysis of two and three dimensional crystals of vault ribonucleoprotein particles

AuthorsQuerol-Audí, Jordi ; Pérez-Luque, Rosa ; Fita, Ignacio ; López-Iglesias, Carmen; Castón, José R.; Carrascosa, José L.; Verdaguer, Núria
X-ray crystallography
Electron microscopy
Issue DateJul-2005
PublisherAcademic Press
CitationJournal of Structural Biology 151(1): 111-115 (2005)
AbstractVaults are large ribonucleoprotein particles found in a wide variety of eukaryotes. When imaged by electron-microscopy vaults present a strikingly conserved barrel-shaped structure with an invaginated waist and two protruding caps. In this work, we present two dimensional (2D) and three dimensional (3D) crystals of naturally produced vaults in murine and monkey cells, respectively. The 2D-crystals presented a hexagonal packing with the lattice parameter defined by the diameter of the vault barrel. Fourier transforms from images of the negatively stained 2D-crystals showed spots till about 45 Å resolution. The 3D-crystals reached about 0.15 × 0.15 × 0.02 mm3 in size and presented a flat triangular morphology with well-developed faces. The preliminary characterization of these 3D-crystals, which diffract very weakly to ∼10 Å resolution, suggests a trigonal packing with the R32 space group symmetry. The 3D-crystals appear to be formed by adding layers of vaults, which retain the hexagonal organization seen in the 2D-crystals, with relative shifts that maximize the interdigitation of particles in adjacent layers. Accurate crystal symmetry in the 2D- and 3D-crystals requires neighbor particles interacting according to a 6-fold and a 3-fold dihedral symmetry, respectively. Compatibility with the reported 8-fold symmetry would imply multiples of 24-fold rotational symmetry, in agreement with the recently proposed 48-fold dihedral symmetry for reconstituted recombinant vaults. © 2005 Elsevier Inc. All rights reserved.
Publisher version (URL)http://dx.doi.org/10.1016/j.jsb.2005.04.002
Identifiersdoi: 10.1016/j.jsb.2005.04.002
issn: 1047-8477
Appears in Collections:(IBMB) Artículos
(CNB) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.