4-Picoline-2,2':6',2"-terpyridine-platinum(II) - a potent intercalator of DNA.


:4-Picoloine-2,2':6',2"-terpyridine-platinum(II) is shown in a ligation assay to unwind and so intercalate into DNA. Circular dichroism is used to determine an equilibrium binding constant of approximately 2 x 10(7) M(-1) for the most stable binding mode of 4-picoline-2,2':6',2"-terpyridine-platinum(II) to poly[d(A-T)2] with a site size of about 4 base pairs, and about 1 x 10(6) M(-1) for a second binding mode with a site size of about 2 base pairs. Fluorescence spectroscopy provides further evidence for the strong equilibrium binding constant of 4-picoline-2,2':6',2"-terpyridine-platinum(II) in that it displaces ethidium bromide bound to DNA. The double positive charge on 4-picoline-2,2':6',2"-terpyridine-platinum(II), together with the intercalative binding mode is probably responsible for the large binding constant.




FEBS letters


McCoubrey A,Latham HC,Cook PR,Rodger A,Lowe G




Has Abstract


1996-02-12 00:00:00














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    pub_type: 杂志文章


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    pub_type: 杂志文章,评审


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    pub_type: 杂志文章


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    pub_type: 杂志文章,评审


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    pub_type: 杂志文章


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    pub_type: 杂志文章


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    pub_type: 杂志文章


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    pub_type: 杂志文章


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    journal_title:FEBS letters

    pub_type: 杂志文章


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    journal_title:FEBS letters

    pub_type: 杂志文章


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    journal_title:FEBS letters

    pub_type: 杂志文章


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