Transcriptional ActivationGenes, mycProto-Oncogene Proteins c-mycTranscription FactorsDNA-Binding ProteinsPromoter Regions, GeneticTrans-ActivatorsMolecular Sequence DataCell LineTranscription, GeneticTransfectionBase SequenceNuclear ProteinsProtein BindingBinding SitesRecombinant Fusion ProteinsGenes, ReporterGene Expression RegulationProtein Structure, TertiaryAmino Acid SequenceCOS CellsHeLa CellsPhosphorylationtat Gene Products, Human Immunodeficiency VirusLuciferasesBasic Helix-Loop-Helix Leucine Zipper Transcription FactorsResponse ElementsTumor Suppressor Protein p53Cell NucleusGene Products, tatSignal TransductionRepressor ProteinsMutationDNATumor Cells, CulturedOncogene Protein p55(v-myc)PlasmidsHIV Long Terminal RepeatGene Expression Regulation, ViralCell Line, TumorCREB-Binding ProteinBasic-Leucine Zipper Transcription FactorsProto-Oncogene ProteinsE1A-Associated p300 ProteinCells, Culturedp300-CBP Transcription FactorsChloramphenicol O-AcetyltransferaseTwo-Hybrid System TechniquesReceptors, GlucocorticoidReceptor, Epidermal Growth FactorHistone AcetyltransferasesReceptors, AndrogenRNA, MessengerCercopithecus aethiopsReceptors, Retinoic AcidTranscription Factor AP-1Sequence DeletionSp1 Transcription FactorNF-kappa BDNA Primers3T3 CellsAdenovirus E1A ProteinsImmediate-Early ProteinsReceptors, Cytoplasmic and NuclearNuclear Receptor Coactivator 1Blotting, WesternMutagenesis, Site-DirectedProto-Oncogene Proteins c-junRetinoid X ReceptorsCell Transformation, NeoplasticDimerizationGene Expression Regulation, NeoplasticElectrophoretic Mobility Shift AssayNuclear Receptor CoactivatorsProto-Oncogene Proteins c-mdm2Precipitin TestsNuclear Receptor Coactivator 2Enhancer Elements, GeneticLeucine ZippersLigandsApoptosisRecombinant ProteinsTyrphostinsTranscription Factor RelAZinc FingersHelix-Loop-Helix MotifsSequence Homology, Amino AcidCell Cycle ProteinsRegulatory Sequences, Nucleic AcidProto-Oncogene Proteins c-mybOncogenesMitogen-Activated Protein KinasesChromatin ImmunoprecipitationGene Products, taxReceptors, SteroidRNA, Small InterferingReceptors, Thyroid HormoneSerineReverse Transcriptase Polymerase Chain ReactionGlutathione Transferase