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. 2017 Aug 31;7:10156. doi: 10.1038/s41598-017-10698-z

Figure 4.

Figure 4

ESI-MSn spectra with n = 2 (upper panel), n = 3 (middle panel) and n = 4 (lower panel) of permethylated Man5GlcNAc2-2AB derivative (m/z 882 corresponding to [M + 2Na]2+ precursor ion) isolated from PtGnTI C. reinhardtii proteins (a) and from Ribonuclease B (b) On each panel, the precursor ion selected for the fragmentation analysis is shown with a diamond and its fragmentation pattern is proposed according to one of the possible structures. 2AB: 2-aminobenzamide; Black square: GlcNAc; grey circle: Man.