Base PairingBase SequenceSkull BaseBase CompositionSchiff BasesStructure-Activity RelationshipMolecular Sequence DataMolecular StructureKineticsDNAAmino Acid SequenceModels, MolecularNucleic Acid ConformationStereoisomerismSkull Base NeoplasmsBase Pair MismatchNucleosidesSubstrate SpecificityEscherichia coliMagnetic Resonance SpectroscopyAdenineDenture BasesProtein BindingMutationDose-Response Relationship, DrugMolecular ConformationHydrogen BondingSomatostatinOctreotideNucleotidesCell LineOligonucleotidesProtein ConformationBinding, CompetitiveRNA Cap AnalogsCloning, MolecularOligodeoxyribonucleotidesCrystallography, X-RayAdenosine TriphosphateDrug DesignAffinity LabelsCatalysisAntineoplastic Agents2-AminopurineHydrogen-Ion ConcentrationPurinesPeptidesTime FactorsInhibitory Concentration 50Pain MeasurementProstaglandins, SyntheticModels, ChemicalPurine NucleosidesCells, CulturedEnzyme InhibitorsHydrolysisComputers, AnalogChromatography, High Pressure LiquidIndicators and ReagentsCattleThermodynamicsCyclic AMPRNA, MessengerTranscription, GeneticReceptors, SomatostatinDrug Screening Assays, AntitumorThymineAdenosineRNAGuanosineUracilThionucleotidesRecombinant ProteinsOligopeptidesKnowledge BasesAzidesDNA RepairTumor Cells, CulturedMannich BasesPlasmidsChemistrySpectrophotometry, UltravioletDNA GlycosylasesCircular DichroismSpectrometry, FluorescenceOrganophosphonatesChemical PhenomenaTemperatureLigandsFluorescent DyesPhotochemistryRabbitsPyrimidine NucleosidesDeoxyadenosinesCell Line, TumorCricetinaeOrganophosphorus CompoundsAntiviral AgentsFluorineMutagenesis, Site-Directed