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. Author manuscript; available in PMC: 2012 Dec 20.
Published in final edited form as: Biochemistry. 2011 Nov 28;50(50):10941–10950. doi: 10.1021/bi201450v

Figure 6. Similar fragment ions are observed for saccharides in negative ion mode.

Figure 6

CID MS2 fragmentations of the [M + 2HCOO]2− of the saccharide chains [4,2,2][0,0,0] at m/z 846.3049 (A) and [6,3,3][0,0,0] at m/z 1242.4535 (B) were obtained in negative ion mode using a Solarix FT-ICR mass spectrometer and are displayed on the chemical structures. Monosaccharide residues abbreviations QM (Qui4NFm), GN (GalNAcAN), and QC (QuiNAc) are shown inside the six-member rings for clarity.