Repressor ProteinsGene Expression Regulation, BacterialBacterial ProteinsGenetic PleiotropyLac RepressorsOperator Regions, GeneticTranscription FactorsDNA FootprintingMolecular Sequence DataDNA-Binding ProteinsPromoter Regions, GeneticMutationBase SequenceTranscription, GeneticAmino Acids, Branched-ChainBacillus subtilisProtein BindingOperonRegulonBinding SitesGenes, RegulatorAmino Acid SequenceEscherichia coliDNA, BacterialPhenotypeTrans-ActivatorsElectrophoretic Mobility Shift AssayGene Expression RegulationViral Regulatory and Accessory ProteinsVirulenceGene DeletionGuanosine PentaphosphateIsoleucinePlasmidsbeta-GalactosidaseNuclear ProteinsGenes, ReporterSignal TransductionRegulatory Elements, TranscriptionalGenes, BacterialGenetic Complementation TestRNA, MessengerLactococcus lactisRecombinant Fusion ProteinsGene Expression Regulation, DevelopmentalCloning, MolecularCell LineLac OperonMutagenesis, InsertionalCyclic AMP Response Element ModulatorHomeodomain ProteinsGene Expression ProfilingGuanosine TriphosphateVirulence FactorsGene Knockout TechniquesSequence Homology, Amino AcidLysogenyZinc FingersDrosophila ProteinsArabidopsis ProteinsEscherichia coli ProteinsHistone DeacetylasesOligonucleotide Array Sequence AnalysisArtificial Gene FusionEnzyme RepressionBacteriophage lambdaTranscriptional ActivationArabidopsisSaccharomyces cerevisiaeGene Expression Regulation, FungalProtein Structure, TertiaryDNAModels, GeneticChromosome MappingKruppel-Like Transcription FactorsSaccharomyces cerevisiae ProteinsBacillus anthracisTransfectionGene Expression Regulation, PlantIsopropyl ThiogalactosideBasic Helix-Loop-Helix Transcription FactorsDrosophilaFlowersHelix-Turn-Helix MotifsFungal ProteinsDNA PrimersAnthraxRegulatory Sequences, Nucleic AcidCells, CulturedSequence AlignmentViral ProteinsLeukocidinsModels, BiologicalCarrier ProteinsCell DifferentiationTwo-Hybrid System TechniquesGene SilencingCarbonCell NucleusChromatin Immunoprecipitation