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. 2019 Jul 26;11(6):1053–1063. doi: 10.1080/19420862.2019.1630218

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© 2019 The Author(s). Published with license by Taylor & Francis Group, LLC.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.

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Figure 1. — Stepping-energy CID spectra of pronase-treated N-glycopeptides (covering glycosylation site Asn163) of atacicept with the peptide sequence ₁₆₃NST₁₆₅. Compounds with the same mass and retention time of two different production batches were compared featuring the same fragmentation pattern and thus, could be identified as the same structure. (a + b) Spectra of the glycopeptide carrying a diantennary core-fucosylated structure. (c + d) Spectra of the glycopeptide carrying a diantennary and disialylated core-fucosylated structure.