Table IV.

Glycosyl-linkage compositions of RG-II isolated form the walls of C. thalictroides, S. molesta, sugar beet, and bamboo (Phyllostachys edulis)

RG-II was isolated by SEC from the material solubilized from C. thalictroides and S. molesta walls by treatment with EPG. The glycosyl-residue compositions were determined by GC/EI-MS analysis of the per-O-methylated alditol acetates.

Linkage C. thalictroidesS. molesta Sugar Beeta Bamboob
Mol%
T-Rhapc 7d 6d 5 5
2-Rhap nde nd 4 2
3-Rhap 5 5 7 5
2,3,4-Rhap 6 5 8 5
T-Fucpf 5 4 6 7
3,4-Fucp 5 6 3 6
T-Arap nd nd 6 nd
T-Araf 4 5 5 6
2,3-Arap 6 6 nd nd
T-Xylpg 3 4 7 nd
3′-Apif 5 5 7 5
2,3,3′-Apif 5 4 3 nd
T-Galp 6 5 7 11
2,4-Galp 9 7 6 8
2-GlcpA 4 4 5 3
T-GalpA 12 15 12 7
4-GalpA 10 8 2 6
2,4-GalpA nd nd 4 5
3,4-GalpA 5 5 3 11
2,3,4- 3 5 nd 8
GalpA
  • aCalculated from Ishii and Kaneko (1998). bCalculated from Kaneko et al. (1997). cT-RhaP, 2,3,4-Tri-O-methyl-1,5-di-O-acetylrhamnitol. dIncludes terminal non-reducing 3-O-methyl rhamnosyl residues. end, Not detected. fFrom terminal non-reducing 2-O-methyl fucosyl residues. gFrom terminal non-reducing 2-O-methyl xylosyl residues.