DNA Topoisomerases, Type IDNA Topoisomerases, Type IIDNA TopoisomerasesTopoisomerase II InhibitorsTopoisomerase InhibitorsTopoisomerase I InhibitorsDNA, SuperhelicalProscillaridinAmsacrineDNA, CatenatedCatenanesDNA GyraseDNA Topoisomerase IVTeniposideDNANovobiocinNucleic Acid ConformationEscherichia coliMolecular Sequence DataCamptothecinBase SequenceEukaryotic CellsModels, MolecularAmino Acid SequencePlasmidsDNA, CircularBinding SitesCatalysisDNA ReplicationSaccharomyces cerevisiaeSubstrate SpecificityEnzyme InhibitorsDNA-Binding ProteinsDNA DamageKineticsAdenosine TriphosphateDNA, BacterialDNA CleavageAntineoplastic AgentsEllipticinesCollagen Type IIProtein SubunitsAminoacridinesQuinolonesCrithidiaMutationFluoroquinolonesDNA, KinetoplastProtein BindingMacromolecular SubstancesAminocoumarinsCloning, MolecularSequence Homology, Amino AcidProtein ConformationProtein Structure, TertiaryIntercalating AgentsAnti-Infective AgentsRecombinant ProteinsEtoposideElectrophoresis, Polyacrylamide GelNaphthyridinesAntigens, NeoplasmMolecular WeightIndenesRecombinasesStructure-Activity RelationshipIsoenzymesCell LineMutagenesis, Site-Directed4-QuinolonesCattleTranscription, GeneticBacterial ProteinsElectrophoresis, Agar GelSulfolobusHydrolysisSequence AlignmentCell NucleusArchaeal ProteinsRecombination, GeneticCyclic AMP-Dependent Protein Kinase Type IITriterpenesDNA PrimersHeLa Cells