PhosphopeptidesPeptidesPeptide MappingPeptide FragmentsPhosphorylationAmino Acid SequenceCaseinsMolecular Sequence DataTrypsinMass SpectrometryPeptide LibraryProteomicsPhosphoproteinsTitaniumAntimicrobial Cationic PeptidesPhosphoserineProtein KinasesTandem Mass SpectrometryPhosphothreonineChromatography, LiquidZirconiumGentisatesProteomeBinding SitesSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationPeptides, CyclicChromatography, High Pressure LiquidGalliumOligopeptidesSpectrometry, Mass, Electrospray IonizationSerineProtein BindingKineticsHafniumSalivary Proline-Rich ProteinsRibosomal Protein S6Substrate SpecificityPhosphotyrosineChromatography, AffinityTrifluoroacetic AcidDynamin IIICation Exchange ResinsTyrosineThreonineElectrophoresis, Polyacrylamide GelIonsProline-Directed Protein KinasesNatriuretic Peptide, BrainCell LineCasein KinasesMolecular WeightAmino AcidsIsotope LabelingAmino Acid MotifsPhosphorus RadioisotopesProtein Conformationsrc Homology DomainsProteinsAmino Acids, BasicModels, MolecularSequence Homology, Amino AcidIntracellular Signaling Peptides and ProteinsRecombinant ProteinsCattleVasoactive Intestinal PeptideStructure-Activity RelationshipProtein Processing, Post-TranslationalIon Exchange ResinsCalcitonin Gene-Related PeptideCell-Penetrating PeptidesRecombinant Fusion ProteinsProtein Structure, TertiaryPeptide BiosynthesisPhosphotransferasesSignal TransductionPeptide YYBase SequencePeptide Nucleic AcidsProtein Kinase CNatriuretic Peptide, C-TypeCells, CulturedProto-Oncogene Proteins pp60(c-src)Mutagenesis, Site-DirectedNatriuretic PeptidesIndicators and ReagentsRabbitsElectrophoresis, Gel, Two-DimensionalProtein-Tyrosine KinasesCyanogen BromideBinding, CompetitivePhosphoamino AcidsGastrin-Releasing PeptideProtein Structure, SecondaryPhosphatesReceptors, Formyl PeptidePeptide PHIChemical FractionationPhosphoprotein PhosphatasesPeptide SynthasesHydrolysis