CysteineOxidation-ReductionSulfenic AcidsDisulfidesOxidative StressCatalysisCysteine EndopeptidasesMolecular Sequence DataAmino Acid SequenceKineticsCysteine ProteasesMutagenesis, Site-DirectedSubstrate SpecificityCysteine DioxygenaseBinding SitesSulfhydryl CompoundsCatalytic DomainCysteine Proteinase InhibitorsModels, MolecularRecombinant ProteinsCysteine SynthaseEscherichia coliMutationBase SequenceProtein ConformationBiocatalysisProtein Structure, TertiarySequence Homology, Amino AcidProtein BindingHydrogen-Ion ConcentrationStructure-Activity RelationshipEnzyme StabilityAmino Acid SubstitutionHydrogen PeroxideGlutathioneCloning, MolecularOxidoreductasesCystineChromatography, High Pressure LiquidEnzyme ActivationElectrophoresis, Polyacrylamide GelSequence AlignmentFatty AcidsDithionitrobenzoic AcidSpectrophotometryCrystallography, X-RayDithiothreitolAmino AcidsSulfhydryl ReagentsCell LineSulfurCopperHistidineLiverHydrolysisIsoenzymesCytochrome P-450 Enzyme SystemOxygenMolecular StructureModels, ChemicalNADCathepsinsCattlePeroxidasesBacterial ProteinsMass SpectrometryMethionineEthylmaleimideMolecular WeightOxidantsSpectrophotometry, UltravioletProtein Structure, SecondaryPapainSulfidesNADPElectron Spin Resonance SpectroscopyGlucose