GuanosinePyrimidine NucleotidesNucleosidesPurine NucleotidesHydrogen BondingPyrimidinesPyrimidine NucleosidesNucleotidesUridine TriphosphateGuanineOrotic AcidUracil NucleotidesOrotate PhosphoribosyltransferaseHydrogenDihydroorotaseUridine MonophosphateGuanine NucleotidesPurine NucleosidesUridineAspartate CarbamoyltransferasePyrimidine DimersModels, MolecularOrotidine-5'-Phosphate DecarboxylaseCarbamoyl-Phosphate Synthase (Glutamine-Hydrolyzing)Uridine KinaseMolecular Sequence DataCytidineUracilCytidine TriphosphateHydrogen PeroxideKineticsCytosine NucleotidesPentosyltransferasesNucleoside Transport ProteinsAmino Acid SequenceDihydroorotate OxidaseRibonucleotidesBinding SitesPurinesSubstrate SpecificityEscherichia coliUridine DiphosphateCrystallography, X-RayBase SequenceGuanine Nucleotide Exchange Factors5'-Nucleotidase3-DeazauridineAdenosine TriphosphateNucleic Acid ConformationHydrogen SulfideDNANucleotide Transport ProteinsProtein ConformationGuanosine TriphosphateStructure-Activity RelationshipPhosphonoacetic AcidPhosphoribosyl PyrophosphateCarbamoyl-Phosphate Synthase (Ammonia)Equilibrative Nucleoside Transporter 1Molecular StructureDeoxycytidine MonophosphateAspartic AcidOrganomercury CompoundsCatalytic DomainNucleotidasesMutationMagnetic Resonance Spectroscopyortho-AminobenzoatesAdenineThermodynamicsMolecular ConformationProtein BindingThymidineAdenine NucleotidesProtein Structure, SecondaryOxidoreductases Acting on CH-CH Group DonorsPurine-Nucleoside PhosphorylaseThioinosinePhosphotransferasesModels, ChemicalCatalysisPyrimidine PhosphorylasesInosineReceptors, Purinergic P2WaterRNACell LineAdenosine DiphosphateBase PairingMutagenesis, Site-DirectedRibonucleosidesProtein Structure, TertiaryDeoxyribonucleosidesCloning, MolecularUltraviolet RaysCytosineNucleoside-Diphosphate KinaseGuanine DeaminaseDeoxyribonuclease (Pyrimidine Dimer)Polymorphism, Single Nucleotide