Ribonucleotide ReductasesRibonucleoside Diphosphate ReductaseCytidine DiphosphateHydroxyureaDeoxyribonucleotidesThiosemicarbazonesFree RadicalsRibonucleotidesElectron Spin Resonance SpectroscopyEscherichia coliPhosphoribosylglycinamide FormyltransferaseNitrate ReductasesDeoxyadenine NucleotidesMolecular Sequence DataHydroxymethylglutaryl CoA ReductasesFMN ReductaseHydroxymethyl and Formyl TransferasesThioredoxin-Disulfide ReductaseOxidoreductasesDeoxyguanine NucleotidesKineticsThioredoxinsDeoxycytosine NucleotidesIronGuanazoleGlutaredoxinsAmino Acid SequenceCobamidesLactobacillus leichmanniiCytochrome-B(5) ReductaseDeoxyribonucleosidesBase SequenceCytosine NucleotidesNitrite ReductasesOxidation-ReductionDeoxyadenosinesThymine NucleotidesSimplexvirusGlutathione ReductaseNADPH-Ferrihemoprotein ReductaseProtein SubunitsMutationFerredoxin-NADP ReductaseAllosteric RegulationNucleotidesTyrosineCytochrome ReductasesDNA ReplicationSubstrate SpecificitySpectroscopy, MossbauerGalliumCloning, MolecularRecombinant ProteinsNADPSequence Homology, Amino AcidDCMP DeaminaseAnaerobiosisMacromolecular SubstancesManganeseBacterial ProteinsUridine DiphosphateAllosteric SiteModels, MolecularDNA DamageCatalysisFerrous CompoundsDeoxycytidine KinaseTetrahydrofolate DehydrogenaseNADH, NADPH OxidoreductasesCell LineDeoxycytidineBacteriophage T4Deoxyuracil NucleotidesCytidine TriphosphateBinding SitesCatalytic DomainIron Chelating AgentsGene Expression Regulation, EnzymologicCell CycleCarcinoma, Ehrlich TumorArabinonucleosidesLeukemia L1210Methylenetetrahydrofolate Reductase (NADPH2)DNACellophanePhosphoribosylaminoimidazolecarboxamide FormyltransferaseAstheniaCrystallography, X-RaySaccharomyces cerevisiaeSpectrophotometryProtein ConformationCytidineCoenzymesNitrate Reductase (NADH)KB CellsCell Cycle ProteinsEnzyme InhibitorsMethionine Sulfoxide ReductasesProtein BindingRNA, Messenger