2O4F

Structure of a parallel-stranded guanine tetraplex crystallised with monovalent ions


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.204 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of a d(TGGGGT) quadruplex crystallized in the presence of Li+ ions.

Creze, C.Rinaldi, B.Haser, R.Bouvet, P.Gouet, P.

(2007) Acta Crystallogr.,Sect.D 63: 682-688

  • DOI: 10.1107/S0907444907013315

  • PubMed Abstract: 
  • A parallel 5'-d(TGGGGT)-3' quadruplex was formed in Na(+) solution and crystallized using lithium sulfate as the main precipitating agent. The X-ray structure was determined to 1.5 A resolution in space group P2(1) by molecular replacement. The asymm ...

    A parallel 5'-d(TGGGGT)-3' quadruplex was formed in Na(+) solution and crystallized using lithium sulfate as the main precipitating agent. The X-ray structure was determined to 1.5 A resolution in space group P2(1) by molecular replacement. The asymmetric unit consists of a characteristic motif of two quadruplexes stacked at their 5' ends. All nucleotides are clearly defined in the density and could be positioned. A single bound Li(+) ion is observed at the surface of the column formed by the two joined molecules. Thus, this small alkali metal ion appears to be unsuitable as a replacement for the Na(+) ion in the central channel of G-quartets, unlike K(+) or Tl(+) ions. A well conserved constellation of water molecules is observed in the grooves of the dimeric structure.


    Organizational Affiliation

    Laboratoire de BioCristallographie, Institut de Biologie et Chimie des Protéines, CNRS-UCBL, UMR 5086, IFR128 BioSciences Lyon-Gerland, 7 Passage du Vercors, 69007 Lyon, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsLengthOrganism
5'-D(*TP*GP*GP*GP*GP*T)-3'A,B,C,D,E,F,G,H6N/A
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A, E
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
LI
Query on LI

Download SDF File 
Download CCD File 
C
LITHIUM ION
Li
HBBGRARXTFLTSG-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.204 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 28.920α = 90.00
b = 57.370β = 108.00
c = 35.920γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
ProDCdata collection
XDSdata reduction
CNSrefinement
PDB_EXTRACTdata extraction
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-05-22
    Type: Initial release
  • Version 1.1: 2007-10-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance