2KM3

Structure of an intramolecular G-quadruplex containing a G.C.G.C tetrad formed by human telomeric variant CTAGGG repeats


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: back calculated data agree with experimental NOESY spectrum 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Sequence variant (CTAGGG)n in the human telomere favors a G-quadruplex structure containing a G.C.G.C tetrad

Lim, K.W.Alberti, P.Guedin, A.Lacroix, L.Riou, J.F.Royle, N.J.Mergny, J.L.Phan, A.T.

(2009) Nucleic Acids Res. 37: 6239-6248

  • DOI: 10.1093/nar/gkp630

  • PubMed Abstract: 
  • Short contiguous arrays of variant CTAGGG repeats in the human telomere are unstable in the male germline and somatic cells, suggesting formation of unusual structures by this repeat type. Here, we report on the structure of an intramolecular G-quadr ...

    Short contiguous arrays of variant CTAGGG repeats in the human telomere are unstable in the male germline and somatic cells, suggesting formation of unusual structures by this repeat type. Here, we report on the structure of an intramolecular G-quadruplex formed by DNA sequences containing four human telomeric variant CTAGGG repeats in potassium solution. Our results reveal a new robust antiparallel G-quadruplex fold involving two G-tetrads sandwiched between a G.C base pair and a G.C.G.C tetrad, which could represent a new platform for drug design targeted to human telomeric DNA.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsLengthOrganism
DNA (5'-D(*AP*GP*GP*GP*CP*TP*AP*GP*GP*GP*CP*TP*AP*GP*GP*GP*CP*TP*AP*GP*GP*G)-3')A22N/A
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: back calculated data agree with experimental NOESY spectrum 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-11-03
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance