Figure 2.
CID MS/MS of a Glycopeptide with 1059.1000 m/z shown in Figure 1. Glycopeptide assignment for the +2 and +3 charge state fragments is shown here. The five core N-glycan and Y1 (peptide + HexNAc) are observed in the spectrum, thus facilitating confident structural assignment. Symbols: GlcNAc, blue squares; Man, green circles; Gal, yellow circles; NeuNAc, magenta diamonds. Oxonium ions are marked with asterisks.