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Quadruplex DNA: sequence, topology and structure.

Sarah Burge1, Gary N Parkinson, Pascale Hazel

  • 1Cancer Research UK Biomolecular Structure Group, The School of Pharmacy, University of London, 29-39 Brunswick Square, London WC1N 1AX, UK.

Nucleic Acids Research
|October 3, 2006
PubMed
Summary
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G-quadruplexes are DNA structures with therapeutic potential. This survey explores their folding, structure, and sequence relationships, highlighting X-ray crystallography and NMR data for drug discovery.

Area of Science:

  • Biochemistry
  • Structural Biology
  • Genomics

Background:

  • G-quadruplexes are higher-order DNA/RNA structures formed from G-rich sequences.
  • They are found in telomeres and non-telomeric genomic DNA, including promoter regions.

Purpose of the Study:

  • To survey the folding and structural features of G-quadruplexes from telomeric and non-telomeric DNA.
  • To examine topology and sequence relationships.
  • To discuss their potential as therapeutic targets.

Main Methods:

  • Focus on high-resolution methods: X-ray crystallography and Nuclear Magnetic Resonance (NMR).
  • Analysis of structural data and biological insights.

Main Results:

  • Detailed examination of G-quadruplex folding and structural characteristics.

Related Experiment Videos

  • Exploration of topology and sequence-structure relationships.
  • Discussion of the scope and limitations of current structural methods.

    • Conclusions:

    • G-quadruplexes present promising therapeutic targets.
    • High-resolution structural data is crucial for understanding and drug discovery.
    • Further biological insights are needed for targeted therapies.