SerinePhosphorylationAmino Acid SequenceMolecular Sequence DataPhosphoserineMutagenesis, Site-DirectedBinding SitesProtein KinasesCell LineProtein-Serine-Threonine KinasesTyrosineKineticsPhosphoproteinsProtein BindingThreonineEnzyme ActivationMutationSerine EndopeptidasesProtein Structure, TertiaryPeptide MappingRecombinant ProteinsPhosphopeptidesBase SequenceProtein Kinase CSubstrate SpecificitySequence Homology, Amino AcidModels, MolecularCells, CulturedAmino Acid SubstitutionTransfectionCyclic AMP-Dependent Protein KinasesCasein Kinase IIProtein Processing, Post-TranslationalProtein-Tyrosine KinasesProtein ConformationOxidative PhosphorylationPeptide FragmentsElectrophoresis, Polyacrylamide GelEnzyme InhibitorsSignal TransductionStructure-Activity RelationshipRecombinant Fusion ProteinsCOS CellsBlotting, WesternPhosphotyrosinePhosphothreonineAmino AcidsCloning, MolecularPhosphoprotein PhosphatasesDNA-Binding ProteinsProteinsHeLa CellsMolecular WeightSequence AlignmentProto-Oncogene Proteins c-aktEscherichia coliCalciumAmino Acid MotifsPeptidesPrecipitin TestsPhosphoamino AcidsMitogen-Activated Protein KinasesSerine ProteasesSerine Proteinase InhibitorsCysteineCalcium-Calmodulin-Dependent Protein KinasesCattleModels, BiologicalProto-Oncogene ProteinsAlanineTrypsinCarrier ProteinsCell MembraneMembrane ProteinsAdenosine TriphosphateImmunoblottingCasein KinasesIntracellular Signaling Peptides and ProteinsTime FactorsCatalysisProtein Structure, SecondaryHydrogen-Ion ConcentrationImmunoprecipitation14-3-3 ProteinsGlycogen Synthase Kinase 3CricetinaeOkadaic AcidCell Line, TumorTetradecanoylphorbol AcetateProtein TransportIsoenzymesCell NucleusTranscription FactorsDNA PrimersMitogen-Activated Protein Kinase 1Phosphatidylinositol 3-KinasesCatalytic DomainMass SpectrometryTumor Cells, CulturedDNA