The interactions between rutin or the inclusion complex of rutin-beta-cyclodextrin and DNA were investigated by means of cyclic voltammetry, UV-vis absorption spectroscopy and fluorescence emission spectroscopy. The apparent binding constant of rutin with DNA is found to be 2.9 x 10(4) L/mol. The results showed that the benzopyranic-4-one plane of rutin mainly intercalated into DNA in the absence of beta-cyclodextrin, while the catecholic portion of rutin was located in the double helix of DNA in the presence of beta-cyclodextrin.
机构:
Hubei Normal Univ, Hubei Key Lab Bioanalyt Technol, Huangshi 435002, Peoples R China
Cent China Normal Univ, Dept Chem, Wuhan 430079, Peoples R ChinaHubei Normal Univ, Hubei Key Lab Bioanalyt Technol, Huangshi 435002, Peoples R China
Tong Xiao-Qing
Lo Jian-Quan
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Hubei Normal Univ, Hubei Key Lab Bioanalyt Technol, Huangshi 435002, Peoples R ChinaHubei Normal Univ, Hubei Key Lab Bioanalyt Technol, Huangshi 435002, Peoples R China
Lo Jian-Quan
Sun Juan
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Hubei Normal Univ, Hubei Key Lab Bioanalyt Technol, Huangshi 435002, Peoples R ChinaHubei Normal Univ, Hubei Key Lab Bioanalyt Technol, Huangshi 435002, Peoples R China
Sun Juan
Gong Zhong-Hong
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Hubei Normal Univ, Hubei Key Lab Bioanalyt Technol, Huangshi 435002, Peoples R ChinaHubei Normal Univ, Hubei Key Lab Bioanalyt Technol, Huangshi 435002, Peoples R China