Stopped-flow kinetic fluorimetric studies of the interaction of Ru(II) complex with DNA and its analytical application

被引：6

作者：

Wang, Rui-Yong ^{[1
]}

Ji, Mi-Na ^{[2
]}

Wang, Ruiqiang ^{[2
]}

Shi, Jie ^{[1
]}

机构：

[1] Zhengzhou Univ, Dept Chem, Zhengzhou 450001, Peoples R China

[2] Zhengzhou Univ, Sch Nursing, Zhengzhou 450052, Peoples R China

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2008年 / 71卷 / 03期

关键词：

Stopped-flow; Fluorimetric; DNA; Ru(phen)(2)(dppz)(2+); Kinetics;

D O I：

10.1016/j.saa.2008.02.043

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A simple, rapid, and sensitive stopped-now kinetic fluorometric approach was established for the assay of DNA in synthetic samples and real samples by using the measures of initial reaction rate. The increased initial reaction rate is in proportion to the concentration of DNA in the range of 2.0 x 10(-8) M to 2.1 x 10(-6) M. The optimum conditions for various parameters on which the binding of Ru(phen)(2)(dppz)(2+) to DNA depends, were investigated. The influence of various surfactants on the interaction was discussed. Furthermore, stopped-flow techniques were employed to determine kinetic parameters of Ru(phen)(2)(dppZ)(2+) binding to DNA under pseudo-first-order conditions. It was found that the interaction of Ru(phen)(2)(dppZ)(2+) with DNA was very fast. A two-step reaction mechanism, a fast phase followed by a slow phase, was proposed. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1042 / 1048

页数：7

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