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(A) CID data of glycopeptide with peptide portion, LICTTNVPWN611SSWSN616K, showing the glycan fragmentation of the high-mannose glycans. (B) ETD data of the same glycopeptide in panel A showing the peptide backbone cleavages. CID and ETD data indicate that the glycopeptide is occupied at N611. (C) CID and (D) ETD data of the O-linked glycopeptide, VIELKPLGIAPT499GAK.
