Rohde W, Shafer R, Idriss J, Levinson W. Binding of N-methyl isatin beta-thiosemicarbazone-copper complexes to proteins and nucleic acids.
J Inorg Biochem 1979;
10:183-94. [PMID:
458443 DOI:
10.1016/s0162-0134(00)80278-0]
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Abstract
N-Methyl isatin beta-thiosemicarbazone-copper complexes interact with nucleic acids and proteins as shown by ultraviolet (UV) and visible spectroscopy and Sephadex exclusion chromatography. The Cu++ ions are most effective; Co++ ions have less albeit significant activity. Chelating agents, such as Tris and histidine, high NaCl concentration, and dimethyl sulfoxide reduce the binding of the drug-metal complex. The binding constant of the drug-copper complex to calf-thymus DNA was calculated to range between 6.9 x 10(4) and 2.7 x 10(5) M-1.
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