HypoxanthineHypoxanthinesPurinesGuanineHypoxanthine PhosphoribosyltransferasePurine NucleotidesPurine NucleosidesAdenineInosinePurine-Nucleoside PhosphorylasePhosphoribosyl PyrophosphatePentosyltransferasesGuanine NucleotidesBase PairingNucleobase Transport ProteinsPyrimidine NucleotidesBase SequenceGuanosineRibosemonophosphatesNucleosidesXanthineInosine MonophosphateGuanine Nucleotide Exchange FactorsDNAAzaguanineKineticsInosine NucleotidesLesch-Nyhan SyndromePyrimidine NucleosidesNucleotidesNucleic Acid ConformationXanthine OxidaseXanthinesDeoxyadenosinesMolecular Sequence DataMutationPurine-Pyrimidine Metabolism, Inborn ErrorsSubstrate SpecificityAdenine PhosphoribosyltransferaseGuanine DeaminaseUric AcidGuanosine MonophosphateEscherichia coliPyrimidinesOligonucleotidesAdenosineModels, MolecularGuanosine TriphosphateThioguanineAdenine NucleotidesBase CompositionStructure-Activity RelationshipMethylthioinosineAllopurinolBinding SitesAllantoinXanthine DehydrogenaseRibonucleosidesBiological Transport, ActiveUracilThioinosineRho Guanine Nucleotide Exchange FactorsIMP DehydrogenaseAzaserineAmidophosphoribosyltransferaseGuanosine DiphosphateN-Glycosyl HydrolasesAdenosine MonophosphateNucleoside Transport ProteinsPentosephosphatesAdenylosuccinate SynthaseGTP-Binding ProteinsSkull BaseDNA GlycosylasesCell LineCytosine6-MercaptopurineThermodynamicsras Guanine Nucleotide Exchange FactorsChromatography, High Pressure LiquidSchiff BasesThymineAdenosine DeaminaseRibonucleotidesAmino Acid SequenceDeoxyguanosineAminohydrolasesDeaminationPhosphoribosylglycinamide FormyltransferaseAdenylosuccinate LyaseAdenosine Deaminase InhibitorsOligodeoxyribonucleotidesAdenosine TriphosphateDeoxyguanine NucleotidesHybrid CellsAdenosine KinaseDNA AdductsNucleotidasesTubercidinFormates