Iron(II)-mimosine catalyzed cleavage of DNA.
نویسندگان
چکیده
Mimosine, DNA breaKs, Free Radicals, Fenton Reaction Supercoiled plasmid DNA was treated in vitro with H2O2, DTT and either Fe (II), Fe (II)-EDTA or Fe (II)-mimosine. The rate of DNA break formation was followed by the conversion of the supercoiled form into relaxed-circular and linear forms. In the concentration interval of 0-4 microM Fe (II), Fe (II)-EDTA slowed-down the formation of DNA breaks, while Fe (II)-mimosine enhanced the rate of break formation up to several times. A conclusion is drawn that this enhancement is due to the increased affinity of the Fe (II)-mimosine complex to DNA.
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عنوان ژورنال:
- Zeitschrift fur Naturforschung. C, Journal of biosciences
دوره 55 9-10 شماره
صفحات -
تاریخ انتشار 2000