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DOI: 10.1039/A704834C (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1998, 153-160

Co-ordination of copper(II) by amikacin. Complexation equilibria in solution and oxygen activation by the resulting complexes[hair space]†

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Małgorzata Jeżowska-Bojczuk and Wojciech Bal

Abstract

Protonation and copper(II) co-ordination properties of amikacin (A) were studied in solution by potentiometry, and NMR, UV/VIS, CD and EPR spectroscopies. Mononuclear, tetragonal and five-co-ordinate complexes of stoichiometries ranging from Cu(H3A) to CuH–2A were found. The effects of amikacin on copper(II) binding by physiological copper(II) carriers, histidine and albumin, and facilitation of oxidation of 2′-deoxyguanosine by copper(II)–amikacin complexes were also investigated. The results indicate that complexation of CuII by amikacin should not be expected to affect copper(II) homeostasis in blood, but may contribute to the intracellular activity of the drug.

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