DNA Topoisomerases, Type IIDNA Topoisomerases, Type IDNA TopoisomerasesNucleic Acid ConformationTopoisomerase II InhibitorsTopoisomerase InhibitorsTopoisomerase I InhibitorsDNA, SuperhelicalProscillaridinDNA, CatenatedAmsacrineDNADNA GyraseCatenanesDNA Topoisomerase IVTeniposideDNA, CircularNovobiocinEscherichia coliBase SequenceMolecular Sequence DataPlasmidsModels, MolecularDNA ReplicationCamptothecinEukaryotic CellsBinding SitesDNA-Binding ProteinsAmino Acid SequenceDNA, BacterialSubstrate SpecificityDNA, ViralCatalysisDNA DamageKineticsEnzyme InhibitorsSaccharomyces cerevisiaeAdenosine TriphosphateDNA, Single-StrandedDNA CleavageElectrophoresis, Agar GelAntineoplastic AgentsRecombination, GeneticEllipticinesIntercalating AgentsProtein BindingCollagen Type IICell Adhesion MoleculesAminoacridinesMutationQuinolonesCrithidiaNucleic Acid DenaturationMicroscopy, ElectronCell LineFluoroquinolonesMolecular WeightDNA Restriction EnzymesDNA, KinetoplastCloning, MolecularOligonucleotidesAminocoumarinsMicroscopy, Atomic ForceAntigens, NeoplasmProtein ConformationCiliophoraSimian virus 40RecombinasesAnti-Infective AgentsProtein Structure, TertiaryRec A RecombinasesBacteriophage lambdaElectrophoresis, Polyacrylamide GelBacterial ProteinsEtoposideRecombinant ProteinsOligodeoxyribonucleotidesDNA, FungalNaphthyridinesStructure-Activity RelationshipNanoporesCell NucleusMolecular StructureIndenesTranscription, GeneticDNA RepairNucleic Acid HybridizationDNA HelicasesCentrifugation, Density GradientNucleosomesHeLa CellsDNA NucleotidyltransferasesEndodeoxyribonucleasesSequence Homology, Amino AcidCrystallography, X-RayChromatinCells, CulturedModels, BiologicalColiphagesHydrolysis