Specific hydrolysis of DNA by Ce^(4+)-ODN hybrid  

作　　者：SHEN Hebai ZHOU Wenjun YANG Yongtao ZHANG Feng 

机构地区：[1]College of Life and Environment Science, Shanghai Normal University, Shanghai 200234, China College of Life and Environment Science, Shanghai Normal University, Shanghai 200234, China College of Life and Environment Science, Shanghai Normal University, Shanghai 200234, China College of Life and Environment Science, Shanghai Normal University, Shanghai 200234, China

出　　处：《Science China Chemistry》2004年第1期75-79,共5页中国科学（化学英文版）

基　　金：This work was supported by the Natural Science Foundation of Shanghai(Grant No.02ZA14068);the Science and Technology Committee of Shanghai(Grant No.011511021).

摘　　要：The cerium complex bound to the derivative of oligoDNA has been synthesized successfully that can hydrolyze DNA with sequence-specificity. The synthesized derivative of oligoDNA, 5′-EDTA-P-10 mers ODN, was demonstrated by HPLC. The fluorescence spectrum of Tb3+ was detected after its interaction with the hybrid of 10-mers ODN and 26-mers ODN and the results show that the artificial endo-enzyme can recognize and combine firmly with the substrate DNA. The electrophorogram shows that the cerium-oligoDNA hybrid can specifically hydrolyze its substrate DNA and the cleavage site of this hydrolysis reaction is also discussed. This artificial nuclease can be widely used in molecular biology and genetic engineering as one kind of endo-enzyme.The cerium complex bound to the derivative of oligoDNA has been synthesized successfully that can hydrolyze DNA with sequence-specificity. The synthesized derivative of oligoDNA, 5′-EDTA-P-10 mers ODN, was demonstrated by HPLC. The fluorescence spectrum of Tb3+ was detected after its interaction with the hybrid of 10-mers ODN and 26-mers ODN and the results show that the artificial endo-enzyme can recognize and combine firmly with the substrate DNA. The electrophorogram shows that the cerium-oligoDNA hybrid can specifically hydrolyze its substrate DNA and the cleavage site of this hydrolysis reaction is also discussed. This artificial nuclease can be widely used in molecular biology and genetic engineering as one kind of endo-enzyme.

关 键 词：OLIGOMER DNA  Ce4+ complex  FLUORESCENCE spectrum  HPLC  hydrolyze DNA specifically. 

分 类 号：O6[理学—化学]