Quantitative evaluation of the interaction between netropsin and double stranded oligodeoxynucleotides by microfabricated capillary array electrophoresis |
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Authors: | Shen Zheng Liu Xiaojun Zhou Xiaomian Liang Aiye Wu Dapeng Yu Linfen Dai Zhongpeng Qin Jianhua Lin Bingcheng |
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Institution: | Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China. |
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Abstract: | Microfabricated capillary array electrophoresis (micro-CAE) was applied to study the interaction between minor groove binder netropsin and a non-selfcomplementary 12 mer double stranded oligodeoxynucleotide: d(CCCCTATACCGC).d(GCGGTATAGGGG). ESI-MS was used to provide an independent verification of the microchip electrophoresis derived data. Simultaneous parallel quantitative assay of multiple samples was performed in a single run (<50 s) on the self-developed micro-CAE device. The binding constant and stoichiometry calculated from Scatchard plot were (2.88 +/- 0.23)x10(5) M(-1) and 1:1, respectively. The values showed a good quantitative agreement with the results determined by ESI-MS and those using other methods reported in the literature. |
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