Sm complex with ofloxacin;
structural characterization;
DNA-binding properties;
CO(II);
ZN(II);
D O I:
10.1155/2009/769146
中图分类号:
Q5 [生物化学];
学科分类号:
071010 ;
081704 ;
摘要:
A novel complex Sm(III) complex with ofloxacin was synthesized and characterized on the basis of elemental analyses, molar conductivities, IR spectra, thermal analysis (TG-DSC), H-1-NMR spectra. Then, spectrometric titration, ethdium bromide displacement experiments by UV spectroscopy, ionic influence, viscosity measurements and Circular Dichroism (CD) spectroscopic measurements were conducted to characterize the interaction between the complex and CT-DNA. Results obtained indicate that the complex bound with CT-DNA via an intercalation mechanism. The binding constants and binding sites number of the Sm(III) complex with CT-DNA were 1.80 x 10(5) l.mol(-1) and 1, respectively.
机构:Lanzhou Univ, Key Lab Nonferrous Met Chem & Resources Utilizat, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
Xu, Min
Ma, Zhao-Rong
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机构:Lanzhou Univ, Key Lab Nonferrous Met Chem & Resources Utilizat, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
Ma, Zhao-Rong
Huang, Liang
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机构:Lanzhou Univ, Key Lab Nonferrous Met Chem & Resources Utilizat, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
Huang, Liang
Chen, Feng-Juan
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机构:Lanzhou Univ, Key Lab Nonferrous Met Chem & Resources Utilizat, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
Chen, Feng-Juan
Zeng, Zheng-zhi
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机构:
Lanzhou Univ, Key Lab Nonferrous Met Chem & Resources Utilizat, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R ChinaLanzhou Univ, Key Lab Nonferrous Met Chem & Resources Utilizat, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China