Fig. 4
Identification of HiPMO1 reaction products after Br2 oxidation using MALDI-TOF–MS. a Various oxidized oligosaccharides: C4-/C1-oxidized oligosaccharides (m/z + 14), C1-oxidized oligosaccharides (m/z + 16), C1-/C6-/C6-oxidized glucuronic acid-containing oligosaccharides (m/z + 26), C1-/C6-/C4-oxidized glucuronic acid-containing oligosaccharides (m/z + 28), C1-/C6-oxidized glucuronic acid-containing oligosaccharides (m/z + 30), and C1-/C6-/C6-oxidized glucuronic acid-containing oligosaccharides (m/z + 44). b Potential structures of various oxidized DP3 oligosaccharides. Only 1 of 3 potential C6-oxidized positions was marked