Structural characterization of a new acidic exopolysaccharide and cyclic (1->2) beta-glucan produced by Rhizobium huakuii forming nodules on Astragalus sinicus

被引：13

作者：

Hisamatsu, M ^{[1
]}

Nomura, S ^{[1
]}

Shutsrirung, A ^{[1
]}

Obata, H ^{[1
]}

Teranishi, K ^{[1
]}

Yamada, T ^{[1
]}

Nuswantara, S ^{[1
]}

Yamashita, M ^{[1
]}

Murooka, Y ^{[1
]}

机构：

[1] OSAKA UNIV,GRAD SCH ENGN,DEPT BIOTECHNOL,SUITA,OSAKA 565,JAPAN

来源：

JOURNAL OF FERMENTATION AND BIOENGINEERING | 1997年 / 83卷 / 04期

关键词：

exopolysaccharide; Rhizobium huakuii; ribose; depolymerase;

D O I：

10.1016/S0922-338X(97)80135-3

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Rhizobium huakuii isolated from root nodules of Astragalus sinicus produced a new acidic exopolysaccharide composed of glucose, galactose, ribose, and glucuronic acid in an approximate molar ratio of 5:1:1:1. Degradation with an enzyme capable of specifically hydrolyzing succinoglycan and methylation analyses suggested that the main chain of the new exopolysaccharide has a common structure with acidic exopolysaccharides from Agrobacterium sp. and Rhizobium meliloti. The distribution pattern of the degrees of polymerization in cyclic (1-->2) beta-glucans of R. huakuii was more similar to that of R. meliloti than that of Agrobacterium sp.

引用

页码：315 / 320

页数：6

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