6533b7d7fe1ef96bd1268f4e
RESEARCH PRODUCT
DNA interaction of CuII, NiII and ZnII functionalized salphen complexes: studies by linear dichroism, gel electrophoresis and PCR.
Giampaolo BaroneCosimo DucaniLouise MaleMichael J. HannonAlessio TerenziAlessio Terenzisubject
StereochemistryIntercalation (chemistry)Molecular Conformationchemistry.chemical_elementZincPhenylenediaminesLinear dichroismCrystallography X-RayPolymerase Chain ReactionInorganic Chemistrychemistry.chemical_compoundBiomimetic MaterialsCoordination ComplexesNickelGel electrophoresisElectrophoresis Agar GelNucleaseDeoxyribonucleasesbiologyCircular DichroismDNASettore CHIM/08 - Chimica FarmaceuticaCopperCrystallographyZincAnticancerchemistrySettore CHIM/03 - Chimica Generale E Inorganicabiology.proteinDNA supercoilMetal complexeDNACopperdescription
The interaction of salphen-type NiII, CuII and ZnII complexes with native DNA was investigated by exploiting linear dichroism experiments. The NiII complex behaves as a typical intercalator, binding strongly and stiffening and unwinding the DNA. The strength of the DNA interaction is slightly weaker for the copper complex and much weaker for the zinc complex. Plasmid-DNA gel electrophoresis experiments indicated that while CuII and ZnII complexes do not induce the unwinding of supercoiled DNA, the NiII complex has a nuclease activity without the addition of external agents. On the other hand, as shown in the PCR assays, we demonstrate that, at the used concentrations, only the CuII complex is able to inhibit the DNA amplification mediated by Taq DNA polymerase. In this paper we have also reported a detailed characterization of the three compounds including 2D-NMR and ESI-mass experiments and X-ray single crystal structure of the copper and nickel compounds.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-06-29 | Dalton transactions (Cambridge, England : 2003) |