DNA triple helix stabilisation by covalent attachment of a triplex-specific ligand.
- Published Article
Biochimica et Biophysica Acta
- Publication Date
Oct 28, 1999
We have prepared oligonucleotides with a naphthylquinoline triplex-binding ligand covalently tethered to the 5'-end and have used UV-melting and DNase I footprinting to examine the stability of intra- and inter-molecular triplexes containing this modification. We find that covalent attachment of the ligand increases the melting temperature of intramolecular 6-mer triplexes by about 14 K, and increases the binding of 9-mer oligonucleotides to their duplex target sites by about 60-fold.
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The corresponding record at NLM can be accessed at https://www.ncbi.nlm.nih.gov/pubmed/10542311