Helix-Loop-Helix MotifsBasic Helix-Loop-Helix Transcription FactorsInhibitor of Differentiation ProteinsHepatocyte Nuclear Factor 3-betaHepatocyte Nuclear Factor 3-gammaHepatocyte Nuclear Factor 3-alphaForkhead Transcription FactorsTranscription FactorsWinged-Helix Transcription FactorsDNA-Binding ProteinsGene Expression Regulation, DevelopmentalMolecular Sequence DataTranscription, GeneticBase SequenceNuclear ProteinsCell DifferentiationRNA, MessengerMice, TransgenicMice, KnockoutPromoter Regions, GeneticNerve Tissue ProteinsAmino Acid SequenceT-Lymphocytes, RegulatoryHelix (Snails)Binding SitesGene Expression RegulationSp1 Transcription FactorHomeodomain ProteinsProtein BindingTrans-ActivatorsRepressor ProteinsTranscriptional ActivationMutationCell LineDNASignal TransductionProtein Structure, SecondaryModels, MolecularProtein Structure, TertiaryPaired Box Transcription FactorsTranscription Factor AP-1TransfectionBasic-Leucine Zipper Transcription FactorsChromatin ImmunoprecipitationIn Situ HybridizationGenes, ReporterStem CellsCells, CulturedCell NucleusSequence Homology, Amino AcidCloning, MolecularTranscription Factor AP-2Reverse Transcriptase Polymerase Chain ReactionEnhancer Elements, GeneticHeLa CellsTranscription Factors, TFIIKruppel-Like Transcription FactorsRecombinant Fusion ProteinsTranscription Factor 7-Like 1 ProteinNucleic Acid ConformationTCF Transcription FactorsEnteroendocrine CellsCell LineageModels, BiologicalGene Expression ProfilingSequence AlignmentBasic Helix-Loop-Helix Leucine Zipper Transcription FactorsYY1 Transcription FactorEndocrine CellsPlasmidsSTAT3 Transcription FactorGene ExpressionTranscription Factor TFIIDXenopus ProteinsGATA4 Transcription FactorMutagenesis, Site-DirectedElectrophoretic Mobility Shift Assay