2LK7

Monomer-dimer equilibrium for 5'-5' stacking of propeller-type parallel-stranded G-quadruplexes: NMR structural study

  • Classification: DNA

  • Deposited: 2011-10-07 Released: 2012-10-10 
  • Deposition Author(s): Do, N.Q., Phan, A.T.

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Monomer-Dimer Equilibrium for the 5'-5' Stacking of Propeller-Type Parallel-Stranded G-Quadruplexes: NMR Structural Study

Do, N.Q.Phan, A.T.

(2012) Chemistry --: --

  • DOI: 10.1002/chem.201103295

  • PubMed Abstract: 
  • Guanine-rich sequence motifs, which contain tracts of three consecutive guanines connected by single non-guanine nucleotides, are abundant in the human genome and can form a robust G-quadruplex structure with high stability. Herein, by using NMR spec ...

    Guanine-rich sequence motifs, which contain tracts of three consecutive guanines connected by single non-guanine nucleotides, are abundant in the human genome and can form a robust G-quadruplex structure with high stability. Herein, by using NMR spectroscopy, we investigate the equilibrium between monomeric and 5'-5' stacked dimeric propeller-type G-quadruplexes that are formed by DNA sequences containing GGGT motifs. We show that the monomer-dimer equilibrium depends on a number of parameters, including the DNA concentration, DNA flanking sequences, the concentration and type of cations, and the temperature. We report on the high-definition structure of a simple monomeric G-quadruplex containing three single-residue loops, which could serve as a reference for propeller-type G-quadruplex structures in solution.


    Organizational Affiliation

    School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsLengthOrganism
DNA (5'-D(*TP*TP*GP*GP*GP*TP*GP*GP*GP*TP*GP*GP*GP*TP*GP*GP*GP*T)-3')A18N/A
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2011-10-07 
  • Released Date: 2012-10-10 
  • Deposition Author(s): Do, N.Q., Phan, A.T.

Revision History 

  • Version 1.0: 2012-10-10
    Type: Initial release