CystineSulfurCysteineSulfur CompoundsCystinosisAmino Acids, SulfurSulfur IsotopesCystine Knot MotifsSulfur DioxideAmino Acid Transport System y+Cysteine EndopeptidasesCysteine ProteasesCysteamineDisulfidesCysteine DioxygenaseCystinuriaCysteine SynthaseSulfidesSulfhydryl CompoundsMustard GasMolecular Sequence DataGlutathioneMethionineAmino Acid SequenceOxidation-ReductionThiosulfatesCysteine Proteinase InhibitorsSulfur OxidesSulfatesAmino AcidsCyclotidesFanconi SyndromeOxidoreductases Acting on Sulfur Group DonorsCystathionine gamma-LyaseCystamineChlorobiSulfurtransferasesKineticsAmino Acid Transport Systems, NeutralMutagenesis, Site-DirectedSulfur HexafluorideModels, MolecularEthylmaleimideChromatiaceaeCystathionineSequence Homology, Amino AcidTaurineSulfhydryl ReagentsAmino Acid Transport Systems, BasicChemical Warfare AgentsOldenlandiaLyasesProtein ConformationHydrogen SulfideDithiothreitolBinding SitesCystine-Knot MiniproteinsGlutathione DisulfideCarbon-Sulfur LyasesSulfur AcidsSulfur RadioisotopesBase SequenceRecombinant ProteinsEscherichia coliIron-Sulfur ProteinsCathepsinsSulfitesHydrogen-Ion ConcentrationMutationChlorobiumCystatinsCoprophagiaGlutamate-Cysteine LigaseSerine O-AcetyltransferasePapainCloning, MolecularBacterial ProteinsMaleatesChromatiumProtein Structure, TertiaryBiological TransportLysosomesOxidoreductasesCathepsin LChromatography, High Pressure LiquidSulfonium CompoundsStructure-Activity RelationshipCulture MediaSulfinic AcidsProtein BindingAcidithiobacillusSequence AlignmentCathepsin BButhionine SulfoximineThiosulfate SulfurtransferaseSubstrate SpecificityIodoacetamideGlutamic AcidAlkylationCatalysis