Sp Transcription FactorsSp1 Transcription FactorSp3 Transcription FactorSp4 Transcription FactorSp2 Transcription FactorPlicamycinDual-Specificity PhosphatasesSubstrate SpecificitySensitivity and SpecificityPromoter Regions, GeneticMolecular Sequence Dataortho-AminobenzoatesBase SequenceProtein Tyrosine PhosphatasesBinding SitesTriterpenesElectrophoretic Mobility Shift AssayCell Line, TumorMitogen-Activated Protein Kinase PhosphatasesTranscription, GeneticCCAAT-Binding FactorAmino Acid SequenceChromatin ImmunoprecipitationProtein BindingTranscription Factor AP-2Down-RegulationGene Expression Regulation, EnzymologicTranscription FactorsGene Expression RegulationDual Specificity Phosphatase 1Cell LineMutagenesis, Site-DirectedAntibody SpecificityGene Expression Regulation, NeoplasticTransfectionTranscriptional ActivationRNA, MessengerSequence Homology, Amino AcidCell ProliferationRNA, Small InterferingLuciferasesGenes, ReporterDNA-Binding ProteinsBlotting, WesternDNA PrimersPhosphorylationMice, NudeRNA InterferenceRecombinant Fusion ProteinsCloning, MolecularRepressor ProteinsMutationReverse Transcriptase Polymerase Chain ReactionXenograft Model Antitumor AssaysSignal TransductionSpecies SpecificityProtein-Serine-Threonine KinasesUp-RegulationProtein-Tyrosine KinasesCells, CulturedHeLa CellsKineticsModels, MolecularROC CurvePredictive Value of TestsReproducibility of ResultsOrgan SpecificityRecombinant ProteinsEscherichia coliProtein Structure, TertiaryEnzyme-Linked Immunosorbent AssaySequence AlignmentStructure-Activity RelationshipEpitopesHost SpecificityPolymerase Chain ReactionDNAPeptidesProtein ConformationCrystallography, X-RayAntibodies, MonoclonalCross ReactionsFalse Positive ReactionsReagent Kits, DiagnosticBacterial ProteinsCatalytic DomainHydrolysisBinding, CompetitiveImmunoassayCatalysisImmunoglobulin GCattleProtein EngineeringElectrophoresis, Polyacrylamide GelCarbohydrate SequenceLigandsPeptide LibraryHydrogen-Ion ConcentrationProtein Structure, SecondaryEvaluation Studies as Topic