Amino Acids, BasicAmino Acid SequenceMolecular Sequence DataSerineAmino AcidsMutagenesis, Site-DirectedSequence Homology, Amino AcidBinding SitesBase SequenceAmino Acids, DiaminoSubstrate SpecificityKineticsCloning, MolecularMutationRecombinant ProteinsProtein BindingProtein Structure, TertiaryModels, MolecularPhosphorylationPeptide FragmentsStructure-Activity RelationshipCell LineAmino Acid SubstitutionProtein ConformationLysineEscherichia coliPeptidesArginineProtein PrecursorsAmino Acid Transport Systems, BasicProtein Processing, Post-TranslationalSequence AlignmentDNAPlasmidsCattleAmino Acid MotifsRecombinant Fusion ProteinsProtein Structure, SecondarySerine EndopeptidasesElectrophoresis, Polyacrylamide GelPhosphoserineMolecular WeightTyrosineDNA, ComplementaryThreonineTransfectionProtein KinasesPeptide MappingEnzyme ActivationBacterial ProteinsPhosphoproteinsConserved SequenceProtein-Serine-Threonine KinasesAlanineCarrier ProteinsCOS CellsCatalysisHeparinChromatography, High Pressure LiquidHydrogen-Ion ConcentrationProteinsCysteineTrypsinDNA PrimersHydrolysisHistidineSequence Homology, Nucleic AcidMutagenesisPoint MutationCells, CulturedMembrane ProteinsDNA-Binding ProteinsCell MembraneBiological TransportSaccharomyces cerevisiaeCatalytic DomainHeLa CellsCrystallography, X-RayBlotting, WesternRNA, MessengerRestriction MappingCircular DichroismEndopeptidasesCricetinaePhosphopeptidesSignal TransductionAmino Acid Transport SystemsSequence DeletionCyanogen BromideProtein Kinase CRabbitsMass SpectrometryTranscription, GeneticMacromolecular SubstancesCell NucleusAspartic AcidProlineCytoplasmIsoenzymesOligopeptides