Amino Acids, EssentialAmino AcidsGlutamineNitrogenDietary ProteinsAspartic AcidCulture MediaSwineAmino Acid SequenceAspartic Acid ProteasesSequence Homology, Amino AcidAspartic Acid EndopeptidasesMolecular Sequence DataAmino Acid SubstitutionCloning, MolecularMutationBase SequenceMutagenesis, Site-DirectedBinding SitesEscherichia coliSequence AlignmentKineticsRecombinant ProteinsAsparagineModels, MolecularStructure-Activity RelationshipProtein ConformationSubstrate SpecificitySaccharomyces cerevisiaePeptidesProtein Structure, TertiaryPlasmidsPeptide FragmentsAmino Acid MotifsProtein BindingCell LineBacterial ProteinsSequence Homology, Nucleic AcidAmino Acid Transport SystemsAlaninePepstatinsRestriction MappingConserved SequenceDNA, ComplementaryMolecular WeightGlycineLeucineProtein Structure, SecondaryMutagenesisRecombinant Fusion ProteinsGenes, BacterialGene DeletionSaccharomyces cerevisiae ProteinsLysinePoint MutationDNADNA PrimersElectrophoresis, Polyacrylamide GelHydrogen-Ion ConcentrationSerineGenes, FungalHistidineGenes, EssentialGlutamatesCattleSequence Analysis, DNAPepsin AProteinsCatalysisIsoaspartic AcidEndopeptidasesCathepsin ETrypsinChromatography, High Pressure LiquidFungal ProteinsArginineRNA, MessengerOpen Reading FramesViral ProteinsAmino Acids, AromaticSpecies SpecificityPolymerase Chain ReactionPhylogenyCarrier ProteinsTransfectionGlutamic AcidAmino Acids, Branched-ChainCysteineHydrolysisGenetic Complementation TestPhenotypeMembrane ProteinsCodonAmino Acids, SulfurThreonineProline