PyrimidinesPyrimidine NucleotidesPyrimidine DimersPyrimidine NucleosidesDeoxyribonuclease (Pyrimidine Dimer)Orotic AcidPyrimidine PhosphorylasesMolecular Sequence DataOrotate PhosphoribosyltransferaseUracilBiosynthetic PathwaysPurinesUltraviolet RaysDihydroorotaseDeoxyribodipyrimidine Photo-LyaseUridineAspartate CarbamoyltransferaseEscherichia coliBase SequenceCarbamoyl-Phosphate Synthase (Glutamine-Hydrolyzing)Purine NucleotidesOrotidine-5'-Phosphate DecarboxylaseMutationPentosyltransferasesAmino Acid SequenceKineticsUridine PhosphorylaseCytidineDihydroorotate OxidaseUracil NucleotidesStreptomycesMolecular StructureUridine MonophosphateBacterial ProteinsUridine KinaseNucleosidesSubstrate SpecificityGenes, BacterialCloning, MolecularThiamineMultigene FamilyOxidoreductases Acting on CH-CH Group DonorsThymineDNAPurine NucleosidesUridine TriphosphateDNA RepairOxidoreductasesDeoxyribonucleosidesGenetic Complementation TestDeoxyuridineProtein BiosynthesisChromatography, High Pressure LiquidSequence Homology, Amino AcidGene Expression Regulation, BacterialNucleotidesPurine-Pyrimidine Metabolism, Inborn ErrorsRibonucleosidesGene Expression Regulation, PlantCarbamyl PhosphatePeptide SynthasesMagnetic Resonance SpectroscopyLyasesTransferasesTerpenesCytidine TriphosphateNucleic Acid ConformationCytosine NucleotidesAcyltransferasesAzauridinePolyketide SynthasesModels, MolecularCarbon IsotopesArabidopsisChromatography, Thin LayerTranscription, GeneticMultienzyme ComplexesStructure-Activity RelationshipDNA, BacterialPhosphoribosyl PyrophosphateCell LineGlycosyltransferasesSequence AlignmentPlant ProteinsPhosphotransferasesRNA, MessengerDNA DamageAdeninePlasmidsThymidineRecombinant ProteinsRibonucleotidesCatalysisCarbon RadioisotopesBinding SitesCytosineN-Glycosyl HydrolasesCells, CulturedSequence Analysis, DNASaccharomyces cerevisiae