Two dinucleotide PNA-cyclen copper(II) complexes with α-PNA (P1) and classical PNA (P2) backbones were synthesized and characterized. The interactions between title complexes and DNA were investigated under physiological conditions. Fluorescence studies indicate that the binding ability of complex P1 to CT-DNA is as twice as that of P2. DNA melting experiments were also carried out and the results show that ΔT m caused by P1 is higher than that caused by P2. Agarose gel electrophoresis experiments demonstrate that P1 is an excellent chemical nuclease, which can cleavage plasmid DNA completely in 12 h.
我们合成并鉴定了两种具有α-PNA(P1)和经典
PNA(P2)骨架的二核苷酸
PNA-环烯
铜(II)配合物。研究了标题配合物与 DNA 在生理条件下的相互作用。荧光研究表明,复合物 P1 与 CT-DNA 的结合能力是 P2 的两倍。此外,还进行了 DNA 熔化实验,结果表明 P1 引起的 ΔT m 要高于 P2 引起的 ΔT m。
琼脂糖凝胶电泳实验证明,P1 是一种优良的
化学核酸酶,能在 12 小时内完全裂解质粒 DNA。