Crystal Structure of the Sarcin/Ricin Domain from E. COLI 23S rRNA, U2656-OCH3 modified

Experimental Data Snapshot

  • Resolution: 0.96 Å
  • R-Value Free: 0.165 
  • R-Value Work: 0.149 
  • R-Value Observed: 0.150 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


A fast selenium derivatization strategy for crystallization and phasing of RNA structures.

Olieric, V.Rieder, U.Lang, K.Serganov, A.Schulze-Briese, C.Micura, R.Dumas, P.Ennifar, E.

(2009) RNA 15: 707-715

  • DOI: https://doi.org/10.1261/rna.1499309
  • Primary Citation of Related Structures:  
    3DVZ, 3DW4, 3DW5, 3DW6, 3DW7

  • PubMed Abstract: 

    Site-specific 2'-methylseleno RNA labeling is a promising tool for tackling the phase problem in RNA crystallography. We have developed an efficient strategy for crystallization and structure determination of RNA and RNA/protein complexes based on preliminary crystallization screening of 2'-OCH(3)-modified RNA sequences, prior to the replacement of 2'-OCH(3) groups with their 2'-SeCH(3) counterparts. The method exploits the similar crystallization properties of 2'-OCH(3)- and 2'-SeCH(3)-modified RNAs and has been successfully validated for two test cases. In addition, our data show that 2'-SeCH(3)-modified RNA have an increased resistance to X-ray radiolysis in comparison with commonly used 5-halogen-modified RNA, which permits collection of experimental electron density maps of remarkable quality.

  • Organizational Affiliation

    Paul Scherrer Institute, Villigen, Switzerland.

Find similar nucleic acids by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains LengthOrganismImage
Sarcin/Ricin Domain from E. Coli 23 S rRNA27N/A
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 0.96 Å
  • R-Value Free: 0.165 
  • R-Value Work: 0.149 
  • R-Value Observed: 0.150 
  • Space Group: P 43
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 29.56α = 90
b = 29.56β = 90
c = 76.16γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
PDB_EXTRACTdata extraction
RemDAqdata collection
XDSdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-03-24
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Refinement description
  • Version 1.3: 2023-08-30
    Changes: Data collection, Database references, Derived calculations, Refinement description