4U5M

Structure of a left-handed DNA G-quadruplex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.180 
  • R-Value Work: 0.141 
  • R-Value Observed: 0.143 

wwPDB Validation   3D Report Full Report


This is version 1.3 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 U S A 112: 2729-2733

  • DOI: https://doi.org/10.1073/pnas.1418718112
  • Primary Citation of Related Structures:  
    4U5M

  • 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 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.


Macromolecules
Find similar nucleic acids by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains LengthOrganismImage
DNA (28-MER)28synthetic construct
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.180 
  • R-Value Work: 0.141 
  • R-Value Observed: 0.143 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.886α = 90
b = 51.886β = 90
c = 40.167γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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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  (Full details and data files)

  • Version 1.0: 2015-02-25
    Type: Initial release
  • Version 1.1: 2015-03-04
    Changes: Database references
  • Version 1.2: 2015-03-11
    Changes: Database references
  • Version 1.3: 2024-05-08
    Changes: Data collection, Database references, Derived calculations