Novel method of detecting mismatch on DNA by using photo-induced electron transfer through DNA

被引:12
作者
Ihara, T [1 ]
Takata, J [1 ]
Takagi, M [1 ]
机构
[1] Kyushu Univ, Grad Sch Engn, Dept Chem Syst & Engn, Higashi Ku, Fukuoka 8128581, Japan
关键词
double stranded DNA; mismatch; mispairing; electron transfer; fluorescence quenching; porphyrin; dimethylphananthrolinium; Stern-Volmer constant;
D O I
10.1016/S0003-2670(97)00621-1
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Novel methodology for detecting a defect on double stranded DNA was presented, the principle being based on the dependence of the efficiency of photo-induced electron transfer through double stranded DNA on the structural disorders in the base stacking. The efficiency of photo-induced electron transfer between 5,10,15,20-tetrakis(N-methylpyridinium-4-yl)-21H,23H-porphine tetrachloride and N,N'-dimethyl-4,7-phenanthrolinium dichloride on double stranded DNA was changed by several base-mispairing on the double stranded DNA. This phenomenon will be useful for the development of the convenient method of detecting mismatch on DNA duplex in homogeneous solution. (C) 1998 Elsevier Science B.V.
引用
收藏
页码:49 / 54
页数:6
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