Peptide HydrolasesSerine EndopeptidasesEndopeptidasesAmino Acid SequenceMolecular Sequence DataProtease InhibitorsAge FactorsHIV ProteaseCysteine ProteasesProtease LaATP-Dependent ProteasesCysteine EndopeptidasesProtease NexinsSerine Proteinase InhibitorsSubstrate SpecificityCathepsinsCysteine Proteinase InhibitorsUbiquitin-Specific ProteasesEndopeptidase ClpSubtilisinsAspartic Acid EndopeptidasesMetalloendopeptidasesCalpainChymotrypsinTrypsinPepstatinsBase SequenceHydrolysisKineticsRecombinant ProteinsProtein Processing, Post-TranslationalOligopeptidesBinding SitesSerpinsProteolysisModels, MolecularMolecular WeightElectrophoresis, Polyacrylamide GelEnzyme PrecursorsPancreatic ElastaseTrypsin InhibitorsMutationSequence Homology, Amino AcidCathepsin LCloning, MolecularBacterial ProteinsEscherichia coliSaquinavirChymasesProtein Structure, TertiaryIndinavirSubtilisinHydrogen-Ion ConcentrationMetalloproteasesHIV-1Cell LineSecretory Leukocyte Peptidase InhibitorPapainPeptide FragmentsProteinase Inhibitory Proteins, SecretoryPeriplasmic ProteinsViral Nonstructural ProteinsPhenylmethylsulfonyl FluorideDrug Resistance, ViralProtein BindingEnzyme ActivationSequence AlignmentCatalytic DomainCathepsin GNelfinavirProtein PrecursorsCarbamatesSerpin E2CaspasesAprotininCaspase 1PeptidesMannose-Binding Protein-Associated Serine ProteasesLeukocyte ElastaseViral ProteinsMutagenesis, Site-DirectedCrystallography, X-Rayalpha 1-AntitrypsinEnzyme StabilityMembrane ProteinsStructure-Activity RelationshipLeupeptinsLopinavirProprotein ConvertasesTryptasesKallikreinsAntipainRecombinant Fusion ProteinsApoptosisCells, CulturedPyrimidinonesCystatinsCaseinsThermolysinBlotting, Western