Mariam Nassiri

Middle-Down Mass Spectrometry Characterization of Monoclonal Antibody Enabled by Electron-Activated Dissociation on a Time-of-Flight Platform: A Case Study of Methionine Oxidation PTM Identification and Quantification

Abstract Characterizing post-translational modifications (PTMs) in monoclonal antibody products is critical for ensuring product quality attributes understanding and monitoring. While the bottom-up approach is widely adopted, it suffers from the loss of molecular connectivity and...