Interaction of novel tris-intercalators with DNA. Spectrofluorometric studies. |
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| Authors: | S Takenaka S Nishira H Kondo M Takagi |
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| Affiliation: | Department of Biochemical Engineering and Science, Faculty of Computer Science and Systems Engineering, Kyushu Institute of Technology, Iizuka, Japan. |
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| Abstract: | Novel DNA binding ligands (1 and its stereoisomer 2) which contain three potentially intercalating units in a linear molecular skeleton were prepared. From a study of the displacement of ethidium bromide from several natural and synthetic polynucleotides, both compounds 1 and 2 were found to show an AT base-pair preference in the interaction with DNAs with 2 a slightly higher affinity for DNA. This result is in sharp contrast to that for acridine and anthraquinone, because these two compounds exhibit a GC-preference. |
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