DNA photocleavage by dicationic bisintercalants
✍ Scribed by Marı́a-José Fernández; Kathryn B Grant; Francisco Herraiz; Xia Yang; Antonio Lorente
- Book ID
- 104231148
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- French
- Weight
- 120 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
The synthesis of new dicationic bisintercalants containing phenazine or naphthalene as photosensitizers and 4,4%-bipyridinium as a linker is reported. Irradiation in the presence of 0.5 mM concentrations of the phenazine intercalants affords cleavage of plasmid DNA (at 22°C, pH 7.0) in good to excellent yields.
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## Abstract A series of dicationic porphyrins were found to specifically recognize loop structures of oligodeoxynucleotides, and to selectively oxidize guanine residues upon photo‐irradiation at micromolar concentrations. These compounds could, thus, be employed as promising structural probes for s