Journal
CHIRALITY
Volume 15, Issue 4, Pages 329-332Publisher
WILEY-LISS
DOI: 10.1002/chir.10206
Keywords
porphyrins; DNA; circular dichroism; resonance light scattering; supramolecular assemblies; psi-condensates
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The size, sign, and profile of induced circular dichroism (CD) features in the Soret region are reliable indicators of the binding modes of porphyrins and metalloporphyrins to DNA. Porphyrins shown (using such CD criteria) to be intercalators in monodispersed DNA duplexes prove extremely useful for the detection and characterization of organized, condensed forms of nucleic acids (psi-condensates). In addition, certain select porphyrin derivatives can form extended assemblies on nonaggregated DNA templates. A combination of CD and resonance light scattering (RLS) measurements allows for sensitive detection and characterization of these porphyrin arrays.
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