PeptidesProtein StabilityProteinsSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationMass SpectrometryProteomicsAmino Acid SequenceProteomeEnzyme StabilityDrug StabilityProtein DenaturationPeptide FragmentsProtein FoldingThermodynamicsModels, MolecularMolecular Sequence DataPeptide LibraryProtein ConformationProtein BindingProtein Structure, SecondaryMutationAntimicrobial Cationic PeptidesProtein Structure, TertiaryRNA StabilityPeptides, CyclicTemperatureCell LineKineticsProteasome Endopeptidase ComplexProteolysisUbiquitinationBinding SitesPeptide MappingAmino Acid SubstitutionOligopeptidesProtein EngineeringCircular DichroismBase SequenceMutagenesis, Site-DirectedStructure-Activity RelationshipUbiquitinGuanidineRecombinant ProteinsProtein Processing, Post-TranslationalEscherichia coliRNA, MessengerSequence Homology, Amino AcidProtein UnfoldingNatriuretic Peptide, BrainAmino AcidsCalorimetry, Differential ScanningHydrogen-Ion ConcentrationPhosphorylationRecombinant Fusion ProteinsAmino Acid MotifsUbiquitin-Protein LigasesHydrophobic and Hydrophilic InteractionsHydrogen BondingPeptide HydrolasesHot TemperatureModels, ChemicalBacterial ProteinsMuramidaseHalf-LifeHEK293 CellsCell Line, TumorSequence AlignmentVasoactive Intestinal PeptideSolventsChromatography, High Pressure LiquidStatic ElectricityUreaCell-Penetrating PeptidesCalcitonin Gene-Related PeptideSignal TransductionCells, CulturedSpectrometry, FluorescenceIntracellular Signaling Peptides and ProteinsCrystallography, X-RayPeptide BiosynthesisPeptide Nucleic AcidsTransfectionMagnetic Resonance SpectroscopyPeptide YYTranscription, GeneticGene Expression RegulationSubstrate SpecificitySequence Analysis, ProteinComputer SimulationCloning, MolecularMutant ProteinsCarrier ProteinsMutation, MissenseMembrane ProteinsLysineTransition TemperatureModels, BiologicalNatriuretic Peptide, C-TypeDNA-Binding ProteinsTime Factors