Repressor ProteinsPeptidesOperator Regions, GeneticLac RepressorsMolecular Sequence DataBase SequenceTranscription FactorsAmino Acid SequenceBacterial ProteinsDNA-Binding ProteinsEscherichia coliProtein BindingOperonBinding SitesTranscription, GeneticPromoter Regions, GeneticIsopropyl ThiogalactosidePeptide FragmentsGene Expression Regulation, BacterialViral Regulatory and Accessory ProteinsPeptide LibraryMutationPlasmidsGenes, RegulatorAntimicrobial Cationic PeptidesCloning, MolecularEscherichia coli ProteinsPeptides, CyclicRecombinant Fusion ProteinsDNA, BacterialDNAProtein ConformationGene Expression RegulationGenes, BacterialModels, MolecularZinc FingersPeptide MappingLac OperonCell LineProtein Structure, TertiaryBacteriophage lambdaLysogenySequence Homology, Amino AcidNuclear ProteinsOligopeptidesRNA, MessengerKineticsViral ProteinsRecombinant ProteinsLactoseStructure-Activity RelationshipSequence AlignmentCarrier ProteinsDNA FootprintingHistone DeacetylasesProtein Structure, SecondaryTrans-ActivatorsEnzyme RepressionRestriction MappingConsensus SequenceDimerizationMutagenesis, Site-DirectedTransfectionNatriuretic Peptide, BrainProtein BiosynthesisRegulatory Sequences, Nucleic AcidTetracyclineElectrophoretic Mobility Shift AssayColiphagesGenes, ReporterDeoxyribonuclease ICells, CulturedDrosophila ProteinsVasoactive Intestinal PeptideTwo-Hybrid System TechniquesAmino Acidsbeta-GalactosidaseElectrophoresis, Polyacrylamide GelCalcitonin Gene-Related PeptideAmino Acid MotifsHeLa CellsSignal TransductionCell-Penetrating PeptidesSequence Homology, Nucleic AcidGene Expression Regulation, FungalTryptophanHomeodomain ProteinsBasic Helix-Loop-Helix Transcription FactorsCell NucleusGene Expression Regulation, DevelopmentalSaccharomyces cerevisiaePeptide BiosynthesisNucleic Acid ConformationInsect ProteinsMolecular WeightPeptide YYProteinsGene ExpressionModels, BiologicalDNA Primers