4U5M

Structure of a left-handed DNA G-quadruplex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.180 
  • R-Value Work: 0.141 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of a left-handed DNA G-quadruplex.

Chung, W.J.Heddi, B.Schmitt, E.Lim, K.W.Mechulam, Y.Phan, A.T.

(2015) Proc.Natl.Acad.Sci.USA 112: 2729-2733

  • DOI: 10.1073/pnas.1418718112

  • PubMed Abstract: 
  • Aside from the well-known double helix, DNA can also adopt an alternative four-stranded structure known as G-quadruplex. Implications of such a structure in cellular processes, as well as its therapeutic and diagnostic applications, have been reporte ...

    Aside from the well-known double helix, DNA can also adopt an alternative four-stranded structure known as G-quadruplex. Implications of such a structure in cellular processes, as well as its therapeutic and diagnostic applications, have been reported. The G-quadruplex structure is highly polymorphic, but so far, only right-handed helical forms have been observed. Here we present the NMR solution and X-ray crystal structures of a left-handed DNA G-quadruplex. The structure displays unprecedented features that can be exploited as unique recognition elements.


    Organizational Affiliation

    School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore; and.,School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore; and phantuan@ntu.edu.sg.,Laboratoire de Biochimie, UMR 7654, CNRS, Ecole Polytechnique, Palaiseau 91128, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsLengthOrganism
DNA (28-MER)A28synthetic construct
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
K
Query on K

Download SDF File 
Download CCD File 
A
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.180 
  • R-Value Work: 0.141 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 51.886α = 90.00
b = 51.886β = 90.00
c = 40.167γ = 120.00
Software Package:
Software NamePurpose
XSCALEdata scaling
XDSdata reduction
PHASERphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Ministry of educationSingapore--
Nanyang technological universitySingapore--
Centre National de la Recherche ScientifiqueFranceUMR7654
Ecole polytechniqueFranceUMR7654

Revision History 

  • Version 1.0: 2015-02-25
    Type: Initial release
  • Version 1.1: 2015-03-04
    Type: Database references
  • Version 1.2: 2015-03-11
    Type: Database references