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DNA Interactions and Bacterial Mutagenicity of Some Chromium(III) Imine Complexes and their Chromium(V) Analogues. Evidence for Chromium(V) Intermediates in the Genotoxicity of Chromium(III)

Dillon, Carolyn; Lay, Peter; Bonin, Antonio; Dixon, Nicholas; Sulfab, Y


The in vitro DNA interactions and bacterial mutagenicities of cis-[CrIII(phen)2(OH2)2]3+ and trans-[CrIII(salen)(OH2)2]+ and their CrV analogues are reported. At pH 3.3, cis-[Cr(phen)2(OH2)2]3+ (0.02-2.0 mM) causes negatively supercoiled pUC9 DNA to smear on agarose gels, with substantial precipitation in the well at ≥1.0 mM. Much weaker interactions between CrIII and DNA were apparent at pH 7.4. The interactions between DNA and CrV phen complexes (0.5 mM total Cr, pH 3.3) generated by...[Show more]

CollectionsANU Research Publications
Date published: 2000
Type: Journal article
Source: Australian Journal of Chemistry


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