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Chapters
- 00:05Title
- 01:43PALeO-TimeCourse: Protease-catalyzed Labeling of Proteolytic Cleavages
- 02:43PALeO-TimeCourse: Postdigestion Labeling of Proteolytic Termini
- 03:48ALeO-TimeCourse: Acid-catalyzed Labeling of Carboxyl Groups
- 04:25MALDI-TOF/TOF MS/MS Data Acquisition and Analysis
- 06:35Preparation of Spectral Time and 18O-incorporation Plots
- 07:06Representative Results
- 08:58Conclusion
Stabile Isotopenmarkierung Workflows Einsatz<sup> 18</sup> O-angereichertem Wasser (Leo-Workflows) sind vielseitige Werkzeuge zur quantitativen und qualitativen Proteomstudien. In Protease-assisted (Paleo) Workflows,<sup> 18</sup> O-Atome werden durch proteolytische Spaltung und Carboxyl-Sauerstoff-Austausch durch Proteasen vermittelt eingeführt. In der Säure-katalysierten (Aleo) Workflow,<sup> 18</sup> O-Atome durch Carboxyl Sauerstoffaustausch bei niedrigen pH eingeführt.
Tags
Protease-catalyzed LabelingAcid-catalyzed Labeling18O-enriched WaterStable IsotopesBiological Mass SpectrometryCatalytic MechanismsProteolytic EnzymesMass Spectrometry-based ProteomicsProtein Expression Levels18O-labelingPeptide Bond CleavageCarboxyl Oxygen Exchange ReactionPALeO AdaptationEnzymatic 18O-labelingDistinctive Isotope SignaturesHigh-resolution Matrix-assisted Laser Desorption Ionization Time-of-flight Tandem Mass Spectrometry (MALDI-TOF/TOF MS/MS)Isotope Envelopes
