Operator Regions, GeneticRepressor ProteinsOperonGene Expression Regulation, BacterialBacterial ProteinsMolecular Sequence DataBase SequencePromoter Regions, GeneticGenes, RegulatorEscherichia coliTranscription FactorsDNA, BacterialMutationGenes, BacterialTranscription, GeneticDNA-Binding ProteinsProtein BindingAmino Acid SequenceBinding SitesTrans-ActivatorsGene Expression RegulationRegulonElectrophoretic Mobility Shift AssaySignal TransductionCorynebacterium glutamicumSequence Homology, Amino AcidDNA FootprintingProtein Structure, TertiaryEscherichia coli ProteinsGene Expression ProfilingNuclear ProteinsGene DeletionGene Expression Regulation, DevelopmentalCell LineSequence AlignmentCloning, MolecularHelix-Turn-Helix MotifsPlasmidsRNA, MessengerTranscriptional ActivationMultigene FamilyAraC Transcription FactorGene Expression Regulation, FungalHomeodomain ProteinsRecombinant Fusion ProteinsDNAOligonucleotide Array Sequence AnalysisModels, MolecularLac OperonReverse Transcriptase Polymerase Chain ReactionCell DifferentiationModels, BiologicalGenes, ReporterPhenotypeArtificial Gene FusionVirulenceDNA PrimersFungal ProteinsCarrier ProteinsMutagenesis, InsertionalChromatin ImmunoprecipitationGenetic Complementation TestCells, CulturedSequence Analysis, DNASaccharomyces cerevisiae ProteinsStreptomyces coelicolorSaccharomyces cerevisiaeRecombinant ProteinsDrosophila ProteinsBasic Helix-Loop-Helix Transcription FactorsMice, KnockoutGene Expression Regulation, PlantConserved SequenceQuorum SensingTwo-Hybrid System TechniquesZinc FingersArabidopsis ProteinsDimerizationCell Nucleusbeta-GalactosidaseMutagenesis, Site-DirectedGene ExpressionTransfectionGene Expression Regulation, ArchaealMembrane ProteinsPhosphorylationCystic Fibrosis Transmembrane Conductance RegulatorVirulence FactorsRegulatory Elements, TranscriptionalAmino Acid MotifsArabidopsisHeLa CellsLeucine-Responsive Regulatory ProteinCrystallography, X-RayMice, Inbred C57BLBlotting, WesternTranscription Initiation SiteProtein ConformationLac RepressorsBacillus subtilis