Chromogenic CompoundsSubstrate SpecificityKineticsEnzymesMolecular Sequence DataCatalysisModels, MolecularAmino Acid SequenceBinding SitesHydrolysisCrystallography, X-RayStructure-Activity RelationshipHydrogen-Ion ConcentrationEscherichia coliProtein BindingRecombinant ProteinsMolecular StructureCatalytic DomainStereoisomerismSulfur CompoundsOxidation-ReductionChromatography, High Pressure LiquidMagnetic Resonance SpectroscopyMutationVolatile Organic Compounds