Pyrimidine NucleotidesPurine NucleotidesPurinesPyrimidinesNucleotidesUridine TriphosphateOrotic AcidOrotate PhosphoribosyltransferasePyrimidine NucleosidesUracil NucleotidesDihydroorotaseUridine MonophosphateAspartate CarbamoyltransferasePyrimidine DimersOrotidine-5'-Phosphate DecarboxylaseCarbamoyl-Phosphate Synthase (Glutamine-Hydrolyzing)Uridine KinasePurine NucleosidesUridineUracilCytidine TriphosphateDihydroorotate OxidaseCytidineCytosine NucleotidesPentosyltransferasesRibonucleotidesUridine DiphosphatePhosphoribosyl Pyrophosphate5'-Nucleotidase3-DeazauridineMolecular Sequence DataNucleotide Transport ProteinsCarbamoyl-Phosphate Synthase (Ammonia)Phosphonoacetic AcidAdenosine TriphosphateKineticsGuanine NucleotidesNucleosidesDeoxycytidine MonophosphateOrganomercury CompoundsEscherichia coliBase SequenceNucleotidasesSubstrate Specificityortho-AminobenzoatesReceptors, Purinergic P2DNAOxidoreductases Acting on CH-CH Group DonorsAmino Acid SequenceNucleic Acid ConformationPurine-Nucleoside PhosphorylaseAdenine NucleotidesAspartic AcidPhosphotransferasesGuanosine TriphosphateAdenosine DiphosphateDeoxyribonuclease (Pyrimidine Dimer)ThymidinePolymorphism, Single NucleotidePyrimidine PhosphorylasesModels, MolecularStructure-Activity RelationshipUltraviolet RaysHypoxanthineHypoxanthinesBinding SitesRNAAdenineInosineCell LineCloning, MolecularCatalytic DomainMutationPurine-Pyrimidine Metabolism, Inborn ErrorsDeoxyribodipyrimidine Photo-LyaseGuanosineDNA RepairUridine PhosphorylaseEnzyme Inhibitors