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Updated: Jul 14, 2026
09:32
Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules
Published on: April 12, 2019
Slipped strand DNA structures.
Richard R Sinden1, Malgorzata J Pytlos-Sinden, Vladimir N Potaman
1Laboratory of DNA Structure and Mutagenesis, Department of Biological Sciences, Florida Institute of Technology, Melbourne, FL 32901-6975, USA. rsinden@fit.edu
Frontiers in Bioscience : a Journal and Virtual Library
|June 16, 2007
Summary
Slipped strand DNA structures, formed by misaligned DNA repeats, may cause instability in sequences linked to neurodegenerative diseases. These structures could be a key factor in disease development.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- Slipped strand DNA (SSD) structures arise from misaligned pairing of complementary DNA strands with direct repeats.
- These structures are typically observed in short, unstable DNA repeats, which are implicated in numerous neurodegenerative diseases.
Purpose of the Study:
- To investigate the potential role of slipped strand DNA structures in DNA sequence instability.
- To explore whether SSD or similar intermediates contribute to the pathogenesis of diseases linked to unstable DNA repeats.
Main Methods:
- Analysis of DNA structures formed by direct repeats.
- Investigation of DNA replication and repair intermediates.
- Correlation studies with known unstable DNA repeat sequences.
Main Results:
- Slipped strand DNA structures can form in various direct repeat sequences.
- Evidence suggests a link between SSD formation and instability in disease-associated DNA repeats.
- Slipped intermediates during DNA processing may also contribute to sequence instability.
Conclusions:
- Slipped strand DNA structures are a potential source of instability in DNA sequences containing direct repeats.
- These structures, or related intermediates, may play a causative role in the instability of DNA sequences associated with neurodegenerative disorders.
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