Nucleic Acid ConformationBase PairingBase SequenceDNAModels, MolecularHelix (Snails)PolydeoxyribonucleotidesNucleic Acid DenaturationMolecular Sequence DataBase CompositionPoly A-UHydrogen BondingIntercalating AgentsOligodeoxyribonucleotidesPoly dA-dTProtein Structure, SecondaryThermodynamicsOligonucleotidesX-Ray DiffractionDNA, SuperhelicalOsmium TetroxideBinding SitesAmino Acid SequenceMagnetic Resonance SpectroscopyDNA, B-FormCrystallography, X-RayProtein ConformationProflavineKineticsEscherichia coliProtein BindingRNATemperatureModels, ChemicalPolynucleotidesModels, StructuralEthidiumStructure-Activity RelationshipBase Pair MismatchMutationPhysicochemical PhenomenaNucleic Acid HeteroduplexesSpectrophotometry, UltravioletChemistry, PhysicalSchiff BasesSkull BaseNuclear Magnetic Resonance, BiomolecularAdenineBiophysical PhenomenaSolutionsBiophysicsCrystallographyDNA, Single-StrandedDNA, CircularCrystallizationDNA-Binding ProteinsProtein Structure, TertiaryPlasmidsMolecular StructureMathematicsMolecular ConformationStatic ElectricityCircular DichroismComputer SimulationOsmolar ConcentrationDrug StabilityThymineDiethyl PyrocarbonateGuaninePoly TAcridinesMicroscopy, Atomic ForceNucleic Acid RenaturationGramicidinStereoisomerismHydroxyl RadicalChemistrySubstrate SpecificityDNA ReplicationRNA, Double-StrandedChemical PhenomenaMutagenesis, Site-DirectedDNA RepairWaterCross-Linking ReagentsDNA AdductsOligoribonucleotidesComputersDNA, ViralCationsNanotechnologyCytosineDNA Topoisomerases, Type IEscherichia coli ProteinsTranscription, GeneticHydrogen-Ion ConcentrationAlkylationDNA, BacterialProtein FoldingMicroscopy, Electron