6D8M

Group I self-splicing intron P4-P6 domain mutant A125U/G126U


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.7 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

In Crystallo Selection to Establish New RNA Crystal Contacts.

Shoffner, G.M.Wang, R.Podell, E.Cech, T.R.Guo, F.

(2018) Structure 26: 1275

  • DOI: 10.1016/j.str.2018.05.005
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Crystallography is a major technique for determining large RNA structures. Obtaining diffraction-quality crystals has been the bottleneck. Although several RNA crystallization methods have been developed, the field strongly needs additional approache ...

    Crystallography is a major technique for determining large RNA structures. Obtaining diffraction-quality crystals has been the bottleneck. Although several RNA crystallization methods have been developed, the field strongly needs additional approaches. Here we invented an in crystallo selection strategy for identifying mutations that enhance a target RNA's crystallizability. The strategy includes constructing an RNA pool containing random mutations, obtaining crystals, and amplifying the sequences enriched by crystallization. We demonstrated a proof-of-principle application to the P4-P6 domain from the Tetrahymena ribozyme. We further determined the structures of four selected mutants. All four establish new crystal lattice contacts while maintaining the native structure. Three mutants achieve this by relocating bulges and one by making a helix more flexible. In crystallo selection provides opportunities to improve crystals of RNAs or RNA-ligand complexes. Our results also suggest that mutants may be rationally designed for crystallization by "walking" a bulge along the RNA chain.


    Organizational Affiliation

    Department of Biological Chemistry, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsLengthOrganism
Group I self-splicing intronA,B159Tetrahymena thermophila
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.7 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.199 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 75.600α = 90.00
b = 132.880β = 90.00
c = 146.780γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2018-04-26 
  • Released Date: 2018-07-04 
  • Deposition Author(s): Shoffner, G.M.

Revision History 

  • Version 1.0: 2018-07-04
    Type: Initial release
  • Version 1.1: 2018-09-19
    Type: Data collection, Database references