| Autor: |
Whitcombe AJ; Complex Carbohydrate Research Center, University of Georgia, Athens 30602-4712, USA., O'Neill MA, Steffan W, Albersheim P, Darvill AG |
| Jazyk: |
angličtina |
| Zdroj: |
Carbohydrate research [Carbohydr Res] 1995 Jul 10; Vol. 271 (1), pp. 15-29. |
| DOI: |
10.1016/0008-6215(94)00002-w |
| Abstrakt: |
An octasaccharide was released from sycamore cell wall rhamnogalacturonan-II (RG-II) by selective acid hydrolysis of the glycosidic linkages of apiosyl residues and purified to homogeneity by gel-permeation and high-performance anion-exchange chromatographies. The octasaccharide 1 contains a terminal nonreducing beta-L-arabinofuranosyl residue linked to position 2 of the alpha-L-rhamnopyranosyl residue of the aceric acid-containing heptasaccharide 2 that had been previously isolated from RG-II [M.W. Spellman et al. Carbohydr. Res., 122 (1983) 131-153]. Heptasaccharide 2 and octasaccharide 1 were found to be mono- or di-O-acetylated. The O-acetyl groups were located, by ESMSMS, on the terminal nonreducing 2-O-methyl-alpha-L-fucosyl residue and/or on the 2-linked beta-L-aceryl acid residue. Octasaccharide 1 and heptasaccharide 2 have the following structures: [structure: see text] |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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