SerineSerine EndopeptidasesCatalytic DomainAcetylcholinesteraseCrystallography, X-RayAmino Acid SequenceBinding SitesMolecular Sequence DataCatalysisModels, MolecularKineticsSerine ProteasesSerine Proteinase InhibitorsPhosphorylationSerine C-PalmitoyltransferasePhosphoserineSerine O-AcetyltransferaseGlycine HydroxymethyltransferaseProtein-Serine-Threonine KinasesThreonineSubstrate SpecificityBase SequenceMutagenesis, Site-DirectedSequence Homology, Amino AcidCell LineMutationRecombinant ProteinsMannose-Binding Protein-Associated Serine ProteasesSerpinsCloning, MolecularEnzyme ActivationProtein BindingProtein KinasesSignal TransductionAmino AcidsL-Serine DehydrataseProtein Structure, TertiaryIsoflurophatePhosphoprotein PhosphatasesProtease InhibitorsPeptide MappingPhenylmethylsulfonyl FluorideTrypsinCathepsin GAmino Acid SubstitutionGlycineEndopeptidasesSequence AlignmentProtein Processing, Post-TranslationalElectrophoresis, Polyacrylamide GelCysteineRacemases and EpimerasesTransfectionPhosphothreonineChymotrypsinPhosphoglycerate DehydrogenasePhosphopeptidesAlaninePhosphoproteinsEscherichia coliCells, CulturedStructure-Activity RelationshipPhosphoamino AcidsEnzyme InhibitorsOkadaic AcidProtein Phosphatase 2DNA, ComplementaryPeptide FragmentsProtein ConformationRecombinant Fusion ProteinsCasein Kinase IICOS CellsSubtilisinsMolecular WeightProtein Kinase CTrypsin InhibitorsBlotting, WesternTyrosineHydrolysisPeptide HydrolasesPancreatic ElastaseSubtilisinLeukocyte ElastaseDNA PrimersKallikreinsPeptidesEnzyme PrecursorsHeLa CellsRNA, Transfer, SerPrecipitin TestsCyclic AMP-Dependent Protein KinasesProteinase Inhibitory Proteins, SecretoryRNA, Messenger14-3-3 ProteinsBacterial ProteinsCarrier ProteinsDNA-Binding ProteinsMembrane ProteinsProto-Oncogene ProteinsEsterases