Aspartic AcidAspartic Acid ProteasesAspartic Acid EndopeptidasesAmino Acid SequenceMolecular Sequence DataAmino AcidsMutagenesis, Site-DirectedAsparaginePepstatinsBinding SitesMutationAmino Acid SubstitutionIsoaspartic AcidBase SequenceCathepsin EGlutamatesPepsin AModels, MolecularStructure-Activity RelationshipKineticsHistidineProtein ConformationSubstrate SpecificityRecombinant ProteinsEscherichia coliSequence Homology, Amino AcidHydrogen-Ion ConcentrationSerineGlycineCloning, MolecularAlaninePeptidesPoint MutationCatalysisAspartate-tRNA LigaseCathepsin DEndopeptidasesGlutamic AcidProtein Structure, TertiaryPeptide FragmentsSequence AlignmentCatalytic DomainProtein BindingProtein Structure, SecondaryThreonineProtease InhibitorsOligopeptidesCell LineElectrophoresis, Polyacrylamide GelAspartate-Semialdehyde DehydrogenaseCarbohydratesConserved SequenceMolecular WeightTrypsinForensic SciencesHydrolysisPhosphorylationKeratin-2PlasmidsChromatography, PaperLysineBacterial ProteinsMutation, MissenseChromatography, High Pressure LiquidDNA PrimersChemistryTransfectionRadiometric DatingArginineProlineChemical PhenomenaHomoserine DehydrogenaseHydrogen BondingStereoisomerismChymosinCrystallography, X-RayChromatography, GelEnzyme PrecursorsMutagenesisProtein Processing, Post-TranslationalKetosteroidsEnzyme StabilityPeptide HydrolasesCysteine EndopeptidasesCattlePepsinogensSerine EndopeptidasesElectrophoresisCodonRecombinant Fusion ProteinsNeuraminic AcidsHydroxylaminesDNA, ComplementaryCircular DichroismCysteineCOS CellsChromatographyPolymerase Chain ReactionAmino Acid MotifsMolecular Structure