Cu(II) complexes with a sulfonamide derived from benzoguanamine. Oxidative cleavage of DNA in the presence of H2O2 and ascorbate.
In: Journal of inorganic biochemistry, Jg. 99 (2005-07-01), Heft 7, S. 1441-8
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Zugriff:
Reaction between benzoguanamine (2,4-diamino-6-phenyl-1,3,5-triazine) and 2-mesitylenesulfonyl chloride leads to formation of a sulfonamide able to form two mononuclear Cu(II) complexes with a CuL(2) stoichiometry. The local environment of the metal cation is a distorted octahedron, with two ligands and two solvent molecules; both complexes crystallize in the monoclinic structure, space group P2(1), with Z=2. In the presence of ascorbate/H(2)O(2,) the two complexes significantly cleavage double-strand pUC18 DNA plasmid. Both complexes exhibit more nuclease efficiency that the copper phenantroline complex. From scavenging reactive oxygen studies we conclude that the hydroxyl radical and a singlet oxygen-like entity, such a peroxide copper complex, are the radical species involved in the DNA damage.
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Cu(II) complexes with a sulfonamide derived from benzoguanamine. Oxidative cleavage of DNA in the presence of H2O2 and ascorbate.
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Autor/in / Beteiligte Person: | Macías, B ; Villa, MV ; Sanz, F ; Borrás, J ; González-Alvarez, M ; Alzuet, G |
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Zeitschrift: | Journal of inorganic biochemistry, Jg. 99 (2005-07-01), Heft 7, S. 1441-8 |
Veröffentlichung: | New York, Elsevier., 2005 |
Medientyp: | academicJournal |
ISSN: | 0162-0134 (print) |
DOI: | 10.1016/j.jinorgbio.2005.04.001 |
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