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. 2009 May 5;284(27):18059–18069. doi: 10.1074/jbc.M109.005660

FIGURE 1.

FIGURE 1.

UGL reaction. A, degradation scheme of Δ6S by UGL. B, catalytic reaction mechanism of UGL. C, structures of unsaturated oligosaccharides. ΔGellan, unsaturated gellan tetrasaccharide; ΔHA, unsaturated hyaluronan disaccharide; Δ0S, unsaturated chondroitin disaccharide; Δ2′S, unsaturated chondroitin disaccharide sulfated at C-2 position of ΔGlcA residue; Δ2′S4S, unsaturated chondroitin disaccharide sulfated at C-2 position of ΔGlcA residue and C-4 position of GalNAc residue; Δ2′S6S, unsaturated chondroitin disaccharide sulfated at C-2 position of ΔGlcA residue and C-6 position of GalNAc residue; Δ4S6S, unsaturated chondroitin disaccharide sulfated at C-4 and C-6 positions of GalNAc residue; Δ2′S4S6S, unsaturated chondroitin disaccharide sulfated at C-2 position of ΔGlcA residue and C-4 and C-6 positions of GalNAc residue.