Hoogsteen base-pairing revisited: Resolving a role in normal biological processes and human diseases

Gargi Ghosal, K. Muniyappa

Research output: Contribution to journalShort surveypeer-review

38 Scopus citations


For a long time since the discovery of an alternative type of hydrogen bonding between adenine and thymidine, termed Hoogsteen base-pairing, its biological role remained elusive. Recent experiments provide compelling evidence that Hoogsteen base pairs manifest in a gamut of nuclear processes encompassing gene expression, replication, recombination, and telomere length maintenance. An increasing number of proteins that have been shown to bind, unwind or cleave G-quadruplexes or triplexes with high specificity underscore their biological significance. In humans, the absence of these cellular factors or their dysfunction leads to a wide spectrum of genetic diseases including cancer, neurodegenerative syndromes, and a myriad of other disorders. Thus, development of clinically useful compounds that target G-quadruplexes or triplexes, and interfere with specific cellular processes, provides considerable promise for successful and improved treatment of human diseases.

Original languageEnglish (US)
Pages (from-to)1-7
Number of pages7
JournalBiochemical and Biophysical Research Communications
Issue number1
StatePublished - Apr 28 2006
Externally publishedYes


  • DNA transactions
  • G-quadruplexes
  • Genetic diseases
  • Hoogsteen base-pairing
  • RecQ helicases
  • Triplexes

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology


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