CyclizationSpectrometry, Mass, Electrospray IonizationTandem Mass SpectrometryIonsMass SpectrometryChromatography, LiquidPeptidesIsomerismProteomicsProtein PrecursorsSpectrometry, Mass, Matrix-Assisted Laser Desorption-IonizationAmino Acid SequenceStereoisomerismMolecular Sequence DataIon ChannelsElectronsChromatography, High Pressure LiquidMolecular StructureGlycopeptidesModels, ChemicalSpectroscopy, Fourier Transform InfraredProteinsPhosphopeptidesAlkenesPeptide MappingAlkynesIon TransportIon Channel GatingIntramolecular LyasesCatalysisDatabases, ProteinTrypsinPalladiumAcetalsAlgorithmsReproducibility of ResultsHeavy IonsAmyloid beta-Protein PrecursorKetonesPolyisoprenyl PhosphatesChemistry, OrganicAlkadienesModels, MolecularKineticsPeptides, CyclicPyransCycloparaffinsLewis AcidsEnzyme PrecursorsMolecular ConformationRhodiumBase SequenceCombinatorial Chemistry TechniquesIminesIsomerasesMagnetic Resonance SpectroscopyIndole AlkaloidsRNA PrecursorsTerpenesCyclotidesHeterocyclic CompoundsFuransCrystallography, X-RayAminationCarbon-Carbon LyasesBinding SitesEpoxy CompoundsHeterocyclic Compounds with 4 or More RingsHydrogen-Ion ConcentrationProtein SplicingSubstrate SpecificityMacrocyclic CompoundsPolyketide SynthasesProtein ConformationSpectrometry, Mass, Secondary IonBoranesOldenlandiaSqualeneIon PumpsOxidation-ReductionIon ExchangeHeterocyclic Compounds, 2-RingInteinsAldehydesEscherichia coliSolid-Phase Synthesis TechniquesStreptomycesProtein Processing, Post-TranslationalCyclodextrinsDiterpenesMonoterpenesNorbornanesNucleic Acid PrecursorsNaphtholsNucleic Acid ConformationMutationMetalsMagnesiumCationsCystine Knot Motifs