Nucleic Acids Research · 1984 · 31 citations · 10 references
Life SciencesBiochemistryChemistryBiophysical ChemistryNucleic Acid BiochemistryNucleic Acid ChemistryDna ChemistryDna StructureNucleic Acid BiophysicsNucleic Acid StructureOligonucleotide ChemistryB-form DnaChemical Shift AnalysisDna Double HelixHelical ConformationHelix TransitionsNucleic Acid Conformational TransitionsNucleic Acid NmrZ-dna
The magnetic shielding produced by the double helix in a B-DNA and a Z-DNA conformation is calculated for each non exchangeable proton of the oligodeoxynucleotides d(CGm5CG)2 and d(CGm5CGCG)2. The differences between the values obtained for the two helical forms are in good agreement with the variations of chemical shift measured when the salt concentration of the solution is changed from 0.1 M to 2 or 4 M. The analysis of the theoretical chemical shift variations shows that the large upfield shift observed for some of the protons of the cytidine residues is due to the sum of the ring current and local magnetic anisotropy effects of the guanines of the two nearest neighbours residues.
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Left-Handed Double Helical DNA: Variations in the Backbone Conformation
Andrew H.‐J. Wang, Gary J. Quigley, Francis J. Kolpak et al. · Science · 1981 · 575 citations
Struther Arnott, R. Chandrasekaran, Luís Puigjaner et al. · Nucleic Acids Research · 1983 · 103 citations · Full text