The aggregation and DNA binding behavior of a new G-quadruplex selective ligand, 6a,12a-diazadibenzo-[a,g]fluorenylium derivative, was studied by UV-vis absorption and fluorescence spectroscopy. The formation of ligand aggregates with different spectral characteristics was observed at low and high concentration of NaCl, respectively. The ligand binds to G-quadruplex with much higher affinity than to single- and double-stranded DNA.
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| http://dx.doi.org/10.1016/j.bmcl.2004.05.029 | DOI Listing |
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