Abstract
The binding to concanavalin A (Con A) by pyridylaminated oligosaccharides derived from bromelain (Man alpha 1,6(Xyl beta 1, 2) Man beta 1, 4GlcNAc beta 1, 4(Fuc alpha 1, 3)GlcNAc), horseradish peroxidase (Man alpha 1,6(Man alpha 1, 3) (Xyl beta 1, 2)Man beta 1, 4GlcNAc beta 1,4(Fuc alpha 1, 3) GlcNAc), bee venom phospholipase A2 (Man alpha 1,6Man beta 1,4GlcNAc beta 1,4GlcNAc and Man alpha 1,6(Man alpha 1, 3)Man beta 1,4GlcNAc beta 1, 4 (Fuc alpha 1, 3)GlcNAc) and zucchini ascorbate oxidase (Man alpha 1,6(Man alpha 1, 3) (Xyl beta 1, 2)Man beta 1, 4 GlcNAc beta 1, 4GlcNAc) was compared to the binding by Man3GlcNAc2, Man5GlcNAc2 and the asialo-triantennary complex oligosaccharide from bovine fetuin. While the fetuin oligosaccharide did not bind, bromelain, zucchini, Man2GlcNAc2 and horseradish peroxidase were retarded (in that order). The alpha 1, 3-fucosylated phospholipase, Man3GlcNAc2 and Man5GlcNAc2 structures were eluted with 15 M alpha -methylmannoside. It is concluded that core alpha 1,3-fucosylation has little or no effect on ConA binding while xylosylation decreases affinity for ConA.
In a parallel study comparing the endoglycosidase D (Endo D) sensitivities of Man3GlcNAc2, IgG-derived GlcNAc beta 1, 2Man alpha 1,6(GlcNAc beta 1,2Man alpha 1,3)Man beta 1,4GlcNAc beta 1,4(Fuc alpha 1,6)GlcNAc, the phospholipase Man alpha 1,6(Man alpha 1, 3)Man beta 1, 4GlcNAc beta 1,4(Fuc alpha 1,3)GlcNAc, and horseradish and zucchini pyridylaminated N-linked oligosaccharides, it was found that only the Man3GlcNAc2 structure was cleaved. The IgG structure was sensitive only when beta -hexosaminidase was also present. Thus, in contrast to core alpha 1,6-fucosylated structures, such as those present in mammals, the presence of core alpha 1,3-fucose, as found in structures from plants and insects, and/or beta 1,2-xylose, as found in plants, causes resistance to Endo D.
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Wilson, I.B., Altmann, F. Concanavalin A binding and endoglycosidase D resistance of beta1,2-xylosylated and alpha 1,3-fucosylated plant and insect oligosaccharides. Glycoconj J 15, 203–206 (1998). https://doi.org/10.1023/A:1006932725821
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DOI: https://doi.org/10.1023/A:1006932725821
- concanavalin A
- endoglycosidase D
- plant oligosaccharides
- bee venom oligosaccharides
- ConA, concanavalin A
- Endo D, endo-beta-N-acetylglucosaminidase D (from Streptococcus pneumoniae)
- HRP, horseradish peroxidase
- PNGase A, peptide: N-glycosidase from almonds
- pyridylaminated oligosaccharides: M0 Man alpha 1,6Man beta 1,4GlcNAc beta 1,4GlcNAc
- MM, Man alpha 1,6(Man alpha 1,3)Man beta 1,4GlcNAc beta 1,4GlcNAc
- M5, Man alpha 1,6(Man alpha 1,3)Man alpha 1,6(Man alpha 1,3)Man beta 1,4GlcNAc beta 1,4GlcNAc
- MMF3, Man alpha 1,6(Man alpha 1,3)Man beta 1,4GlcNAc beta 1,4(Fuc alpha 1,3)GlcNAc
- M0XF3,Man alpha 1,6(Xyl beta 1,2)Man beta 1,4GlcNAc beta 1,4(Fuc alpha 1,3)GlcNAc
- MMXF3,Man alpha 1,6(Man alpha 1,3)(Xyl beta 1,2)Man beta 1,4GlcNAc beta 1,4(Fuc alpha 1,3)GlcNAc
- MMX, Man alpha 1,6(Man alpha 1,3)(Xyl beta 1,2)Man beta 1,4GlcNAc beta 1,4GlcNAc
- GnGnF6, GlcNAc beta 1,2Man alpha 1,6(GlcNAc beta 1,2Man alpha 1,3)Man beta 1,4GlcNAc beta 1,4(Fuc alpha 1,6)GlcNAc