| Study on the reaction of triple helix poly(A:2I) with Cu~(2+) |
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| 作者姓名： | HUA Er-BingCoordination Chemistry Institute State Key Laboratory of Coordination Chemistry Nanjing University Nanjing Jiangsu ChinaYANG Pin LI Qing-Shan YANG Bin-ShengInstitute of Molecular Science Shanxi University Taiyuan Shanxi China |
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| 作者单位： | HUA，Er-BingCoordination Chemistry Institute，State Key Laboratory of Coordination Chemistry，Nanjing University，Nanjing，Jiangsu 210008，ChinaYANG，Pin LI，Qing-Shan YANG，Bin-ShengInstitute of Molecular Science，Shanxi University，Taiyuan，Shanxi 030006，China |
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| 摘 要： | The effect of Cu2+ on the triple-stranded helical structure of poly(A:2I) was studied by means of circular dichroism spectral method with the help of ultraviolet spectral and ethidium bromide fluorescence probe methods. It was found that Cu2+ destabilizes the structure of the triple helix poly(A:2I) and induces its structural transformations, meanwhile, the transformations can be partially reversed by a higher NaCl concentration. The structural transformations may be expressed by the following scheme: poly(A:2I) - poly(A:I) + poly(I)- poly(A) + 2poly(I)
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Study on the reaction of triple helix poly(A:2I) with Cu~(2+) |
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| HUA,Er-BingCoordination Chemistry Institute,State Key Laboratory of Coordination Chemistry,Nanjing University,Nanjing,Jiangsu ,ChinaYANG,Pin LI,Qing-Shan YANG,Bin-ShengInstitute of Molecular Science,Shanxi University,Taiyuan,Shanxi ,China.Study on the reaction of triple helix poly(A:2I) with Cu~(2+)[J].Chinese Journal of Chemistry,1996,14(4):297-302. |
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| Authors: | HUA Er-BingCoordination Chemistry Institute State Key Laboratory of Coordination Chemistry Nanjing University Nanjing Jiangsu ChinaYANG Pin LI Qing-Shan YANG Bin-ShengInstitute of Molecular Science Shanxi University Taiyuan Shanxi China |
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| Institution: | HUA,Er-BingCoordination Chemistry Institute,State Key Laboratory of Coordination Chemistry,Nanjing University,Nanjing,Jiangsu 210008,ChinaYANG,Pin LI,Qing-Shan YANG,Bin-ShengInstitute of Molecular Science,Shanxi University,Taiyuan,Shanxi 030006,China |
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| Abstract: | The effect of Cu2+ on the triple-stranded helical structure of poly(A:2I) was studied by means of circular dichroism spectral method with the help of ultraviolet spectral and ethidium bromide fluorescence probe methods. It was found that Cu2+ destabilizes the structure of the triple helix poly(A:2I) and induces its structural transformations, meanwhile, the transformations can be partially reversed by a higher NaCl concentration. The structural transformations may be expressed by the following scheme: poly(A:2I) - poly(A:I) + poly(I)- poly(A) + 2poly(I) |
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| Keywords: | Poly(A:2I) CD fluorescence probe structural transformation |
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