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Checkpoint responses to unusual structures formed by DNA repeats.

Abstract
DNA sequences that are prone to adopting non-B DNA secondary structures are associated with hotspots of genomic instability. The fine mechanisms by which alternative DNA structures induce phenomena such as repeat expansions, chromosomal fragility, or gross chromosomal rearrangements are under intensive studies. It is well established that DNA damage checkpoint responses play a crucial role in maintaining a stable genome. It is far less clear, however, whether and how the checkpoint machinery responds to alternative DNA structures. This review discusses the role of the interplay between DNA damage checkpoints and alternative DNA structures in genome maintenance.
AuthorsIrina Voineagu, Catherine H Freudenreich, Sergei M Mirkin
JournalMolecular carcinogenesis (Mol Carcinog) Vol. 48 Issue 4 Pg. 309-18 (Apr 2009) ISSN: 1098-2744 [Electronic] United States
PMID19306277 (Publication Type: Journal Article, Research Support, N.I.H., Extramural, Review)
Copyright(c) 2009 Wiley-Liss, Inc.
Chemical References
  • Cell Cycle Proteins
  • DNA
Topics
  • Animals
  • Cell Cycle
  • Cell Cycle Proteins (metabolism)
  • DNA (genetics)
  • Humans
  • Repetitive Sequences, Nucleic Acid (genetics)

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