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N-Glycan structure and antenna fucose linkage assignment of GlcNAc2Man5Fuc2 (9832+) from N2. The wild-type structural isomer of the 1272 B-type ion differs from the NF299, where fucose is a terminal residue on the antenna and not at the chitobiose core. MS4 of the 433 ion, which is the Fuc-Hex C-type disaccharide, shows the linkage to be both 1-2 and 1-4 with fucose at the terminus.
