Ribonucleotide ReductasesRibonucleoside Diphosphate ReductasePhosphoribosylglycinamide FormyltransferaseCytidine DiphosphateHydroxymethyl and Formyl TransferasesRibonucleotidesHydroxyureaDeoxyribonucleotidesThiosemicarbazonesFree RadicalsPhosphoribosylaminoimidazolecarboxamide FormyltransferaseEscherichia coliDeoxyadenine NucleotidesElectron Spin Resonance SpectroscopyNucleotide DeaminasesCarbon-Nitrogen Ligases with Glutamine as Amide-N-DonorDeoxyguanine NucleotidesDeoxycytosine NucleotidesMolecular Sequence DataGuanazoleCobamidesKineticsCytosine NucleotidesDeoxyadenosinesDeoxyribonucleosidesLactobacillus leichmanniiBase SequenceThymine NucleotidesNucleotidesIronCarbon-Nitrogen LigasesSimplexvirusThioredoxinsAmino Acid SequenceDNA ReplicationPurine NucleotidesAllosteric RegulationProtein SubunitsMutationPurinesSubstrate SpecificityTyrosineCytidine TriphosphateDCMP DeaminasePyrimidine NucleotidesGalliumSpectroscopy, MossbauerCatalytic DomainOxidation-ReductionManganeseAminoimidazole CarboxamideDNA DamageLeukemia L1210Uridine DiphosphateDNAAllosteric SiteTetrahydrofolatesModels, MolecularMacromolecular SubstancesInosineCloning, MolecularCell CycleDeoxycytidineDeoxycytidine KinaseBacterial ProteinsCarcinoma, Ehrlich TumorBacteriophage T4Binding SitesFerrous CompoundsDeoxyuracil NucleotidesCytidineInosine NucleotidesRecombinant ProteinsSequence Homology, Amino AcidCrystallography, X-RayAdenosine TriphosphateCatalysisCell LineAcyltransferasesArabinonucleosidesIron Chelating AgentsRNAAnaerobiosisRibonuclease HAntimetabolites, AntineoplasticCellophaneAstheniaSaccharomyces cerevisiaeGlycineKB CellsRibosemonophosphatesCell Cycle ProteinsGene Expression Regulation, EnzymologicProtein BindingDNA PrimersThermoplasmaProtein ConformationAdenineDeoxyguanosineVidarabine Phosphate