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UPLC-MS Data for GCLC Peptide. Depicted are the extracted ion chromatograms for the samples without protease and with protease (top) and the mass spectra (bottom) for (A) the Intact Peptide, (B) the P Fragment, and (C) the P′ Fragment. Normalization levels of the base peaks for the P and P′ fragments were 3.20 × 106 and 1.40 × 106, respectively. High resolution mass spectrometric analysis corroborates the identities of each base peak in the corresponding ion chromatogram.
