Mapping Isomeric Peptides Derived from Biopharmaceuticals Using High-Resolution Ion Mobility Mass Spectrometry
Nick Tomczyk, Kevin Giles, Keith Richardson, Jakub Ujma, Martin Palmer, Peter Kresten Nielsen, Kim F. Haselmann
Abstract
The identification and localization of isomeric peptide modifications is a critical requirement of the biopharmaceutical industry. Despite the ability of liquid chromatography-mass spectrometry to identify many of the common post translational modifications, the identification of isobaric or racemized peptides is confounded by modern mass spectrometry-based techniques. Here, we present a novel approach combining liquid chromatography with a high-resolution ion mobility mass spectrometry system to differentiate peptide and peptide fragments based upon their mobility and mass.
Topics & Concepts
ChemistryMass spectrometryIon-mobility spectrometryChromatographyPeptideIsobaric labelingProtein mass spectrometryResolution (logic)Ion-mobility spectrometry–mass spectrometrySample preparation in mass spectrometryTandem mass spectrometryBiochemistryElectrospray ionizationArtificial intelligenceComputer scienceMass Spectrometry Techniques and ApplicationsAdvanced Proteomics Techniques and ApplicationsProtein purification and stability