Operator Regions, GeneticOperonRepressor ProteinsBase SequenceMolecular Sequence DataEscherichia coliBacterial ProteinsGenes, RegulatorPromoter Regions, GeneticGene Expression Regulation, BacterialDNA, BacterialMutationGenes, BacterialEukaryotic CellsAmino Acid SequenceProtein BindingEukaryotaBinding SitesPhylogenyEvolution, MolecularSaccharomyces cerevisiaeProtein Structure, TertiarySequence Homology, Amino AcidDNA-Binding ProteinsSequence AlignmentTranscription FactorsProkaryotic CellsModels, MolecularSaccharomyces cerevisiae ProteinsNucleic Acid ConformationLac OperonLac RepressorsDNAPlasmidsCloning, MolecularConserved SequenceArchaeaProtein ConformationRecombinant Fusion ProteinsEscherichia coli ProteinsKineticsFungal ProteinsTranscription, GeneticViral Regulatory and Accessory ProteinsRecombinant ProteinsModels, GeneticModels, BiologicalCrystallography, X-RayCarrier ProteinsComputer TerminalsCell LineRadiation ProtectionNuclear ProteinsSchizosaccharomycesDNA FootprintingRNA-Binding ProteinsBiological EvolutionROC CurveCell NucleusRNA, MessengerArabidopsisAmino Acid MotifsIsopropyl ThiogalactosideDimerizationArchaeal ProteinsMutagenesis, Site-DirectedSubstrate SpecificityFluoroscopyGene Expression RegulationGene Transfer, HorizontalProtozoan ProteinsRadiation MonitoringHeLa CellsGenomeBacteriaSequence Analysis, DNADNA PrimersGene Expression Regulation, FungalProteinsPlantsReproducibility of ResultsOccupational ExposureMultigene FamilyDNA ReplicationProtein Structure, SecondarySequence Homology, Nucleic AcidProtein BiosynthesisBinding, CompetitiveRhodophytaMembrane ProteinsComputational BiologyDiplomonadidaGenes, FungalArabidopsis ProteinsTime FactorsRadiography, InterventionalElectrophoresis, Polyacrylamide Gel