title: Effect of Different Z-Inducers on the Stabilization of Z Portion in BZ-DNA Sequence: Correlation Between Experimental and Simulation Data.
abstract: In this study we show the outstanding agreement between simulation and experimental data concerning the efficient stabilization effect by NaCl of Z conformation. We demonstrate by circular dichroism (CD) experiments that Na(+) not only is able to induce a B to Z form transition in a short (GC)3 alternated portion of a sequence having 17 basis, but also is the best stabilizer in comparison with other Z inducers used (spermine and NiCl2). This result was confirmed by free energy calculations.
authors.affiliation: Department of Health Sciences, University of Catanzaro, Catanzaro, Italy.
authors.forename: Adriana
authors.initials: A
authors.lastname: Pietropaolo
authors.affiliation: Department of Chemical Science, University of Catania, Catania, Italy.
authors.forename: Alessandro
authors.initials: A
authors.lastname: D'urso
authors.affiliation: Department of Chemical Science, University of Catania, Catania, Italy.
authors.forename: Roberto
authors.initials: R
authors.lastname: Purrello
authors.affiliation: Department of Chemistry, Columbia University, New York, NY, USA.
authors.forename: Nina
authors.initials: N
authors.lastname: Berova
mesh_terms: D002942:Circular Dichroism; D004247:DNA / Q000737:chemistry*; D009690:Nucleic Acid Conformation; D013237:Stereoisomerism
chemical_list: D004247:DNA
keywords: B-Z junction; DNA; chirality index; circular dichroism; free energy calculation