Cysteine ProteasesCysteineCrystallography, X-RayCysteine EndopeptidasesModels, MolecularCysteine Proteinase InhibitorsAmino Acid SequenceMolecular Sequence DataProtease InhibitorsCrystallizationProtein Structure, TertiaryCathepsinsBinding SitesProtein ConformationCathepsin LProtein Structure, SecondaryCatalytic DomainSequence Homology, Amino AcidCystatinsCathepsin BPapainProtein BindingSubstrate SpecificityCrystallographyEndopeptidasesProtein Structure, QuaternaryHIV ProteaseSequence AlignmentDimerizationCalpainHydrogen BondingSerine EndopeptidasesPeptide HydrolasesRecombinant ProteinsBacterial ProteinsMutagenesis, Site-DirectedCathepsin KStructure-Activity RelationshipCatalysisStructural Homology, ProteinCathepsin FEscherichia coliMutationKineticsBase SequenceMolecular StructureProtein FoldingHydrolysisDipeptidesCloning, MolecularProtein MultimerizationDisulfidesMolecular ConformationSerine Proteinase InhibitorsAmino Acid SubstitutionStatic ElectricityEnzyme PrecursorsCaspase 1Cysteine DioxygenaseProtease LaLigandsConserved SequenceHydrogen-Ion ConcentrationCaspasesSpirometraLiquid CrystalsATP-Dependent ProteasesLeucineCysteine SynthaseElectrophoresis, Polyacrylamide GelEnzyme ActivationModels, ChemicalEscherichia coli ProteinsOligopeptidesCell LineX-Ray DiffractionPeptidesProtozoan ProteinsProtein Processing, Post-TranslationalParagonimusStreptococcus pyogenesAmino Acid MotifsEnzyme StabilityHydrophobic and Hydrophilic InteractionsHelminth ProteinsProteolysisDrug DesignLysosomesCathepsin CSulfhydryl CompoundsBromelainsApoptosisCystatin BPeptide FragmentsCystatin AHistidineCoumarinsProtease NexinsSerpinsOxidation-Reduction