Structural studies on cyclic (1→2)-β-d-glucans (cyclosophoraoses) produced by Agrobacterium and Rhizobium
✍ Scribed by Makoto Hisamatsu; Akinori Amemura; Kyoko Koizumi; Toshiko Utamura; Yasuyo Okada
- Book ID
- 107725228
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 490 KB
- Volume
- 121
- Category
- Article
- ISSN
- 0008-6215
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Eight pure cyclic (l-2)$-D-glucans (cyclosophoraoses) varying in size from 17 to 24 residues were previously isolated from culture filtrates of Agrobacterium and Rhizobium. Thereafter further studies on the separation of cyclosophoraoses by highperformance liquid chromatography (HPLC) with small-par
## In addition to cellular glycogen and an acidic exopolysaccharide of high molecular weight, Rhizobium mefifoti (5 strains) produces a cyclic (1+2)-p-D-glucan (d.p. -20) that accumulates in the cells, and a pyruvylated and succinylated octasaccharide that is excreted into the medium. The octasacc
Ten strains of R/zi~o~ium tested produced extracellular, cyclic (142)$-r)glucan, and five of ten strains produced the linear octasaccharide repeating-units of the extracellular, acidic polysaccharides. --..\_\_ \*This work was supported, in part, by Grant 571110088 from the Ministry of Education and