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. 2019 Feb 6;11(3):463–476. doi: 10.1080/19420862.2019.1565748

Figure 2.

Figure 2.

Scheme showing DEPC labeling with MS detection for the structural analysis of antibody therapeutics. DEPC reagent modifies solvent accessible amino acids. The modified protein is subjected to proteolytic digestion and the modified peptides are analyzed using LC–MS/MS. Sites of protein conformational changes can be revealed by changes in the extent of labeling at specific residues.