1YVR

Ro autoantigen


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.213 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Insights into RNA Quality Control: The Ro Autoantigen Binds Misfolded RNAs via Its Central Cavity

Stein, A.J.Fuchs, G.Fu, C.Wolin, S.L.Reinisch, K.M.

(2005) Cell 121: 529-539

  • DOI: 10.1016/j.cell.2005.03.009
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The Ro 60 kDa autoantigen is a major target of the immune response in patients with systemic lupus erythematosus. In vertebrate cells, Ro binds misfolded small RNAs and likely functions in RNA quality control. In eukaryotes and bacteria, Ro also asso ...

    The Ro 60 kDa autoantigen is a major target of the immune response in patients with systemic lupus erythematosus. In vertebrate cells, Ro binds misfolded small RNAs and likely functions in RNA quality control. In eukaryotes and bacteria, Ro also associates with small RNAs called Y RNAs. We present structures of unliganded Ro and Ro complexed with two RNAs at 1.95 and 2.2 A resolution, respectively. Ro consists of a von Willebrand factor A domain and a doughnut-shaped domain composed of HEAT repeats. In the complex, a fragment of Y RNA binds on the outer surface of the HEAT-repeat ring, and single-stranded RNA binds in the toroid hole. Mutagenesis supports a binding site for misfolded RNAs that encompasses both sites, with a single-stranded end inserted into the toroid cavity. Our experiments suggest that one role of Y RNAs may be to regulate access of other RNAs to Ro.


    Organizational Affiliation

    Department of Cell Biology, Yale University School of Medicine, New Haven, CT 06510, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
60-kDa SS-A/Ro ribonucleoprotein
A
538Xenopus laevisMutation(s): 0 
Gene Names: ro60 (trove2)
Find proteins for P42700 (Xenopus laevis)
Go to UniProtKB:  P42700
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.213 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 68.780α = 90.00
b = 91.750β = 90.00
c = 93.880γ = 90.00
Software Package:
Software NamePurpose
CNSphasing
HKL-2000data collection
SCALEPACKdata scaling
CNSrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-06-07
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance