Occurrence of two extracellular acidic polysaccharides as products of Rhizobium meliloti 201 |
| |
Authors: | Nan-Xiong Yu Makoto Hisamatsu Akinori Amemura Tokuya Harada |
| |
Institution: | Institute of Scientific and Industrial Research, Osaka University, Suita, Osaka 565, Japan |
| |
Abstract: | The extracellular polysaccharide of Rhizobium meliloti 201 consists of two acidic polysaccharides, APS-I and APS-II. APS-I is composed of D-glucose, D-mannose and D-glucuronic acid in a molar ratio of 3:3:2, whereas APS-II is composed of D-glucose, D-galactose, D-mannose and pyruvic acid in a molar ratio of 4:3:2:1.APS-II was separated from the extracellular polysaccharide preparation by hydrolysing APS-I to its octasaccharide repeating unit with a specific enzyme. APS-I and APS-II were also separated by treatment with cetylpyridinium chloride and by paper electrophoresis of the depyruvylated polysaccharide. |
| |
Keywords: | To whom requests for reprints should be sent |
本文献已被 ScienceDirect 等数据库收录! |
|