Structural investigation of a heteroglycan isolated from the fruit bodies of an ectomycorrhizal fungus Astraeus hygrometricus

被引：15

作者：

Chakraborty, Indranil ^{[1
]}

Mondal, Soumitra ^{[1
]}

Rout, Dilip ^{[1
]}

Chandra, Krishnendu ^{[1
]}

Islam, Syed S. ^{[1
]}

机构：

[1] Vidyasagar Univ, Dept Chem & Chem Technol, W Midnapore 721102, W Bengal, India

来源：

CARBOHYDRATE RESEARCH | 2007年 / 342卷 / 07期

关键词：

Astraeus hygroinetricus; ectomycorrhiza; polysaccharide; structure; NMR spectroscopy;

D O I：

10.1016/j.carres.2007.02.004

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 [生物化学与分子生物学]; 081704 [应用化学];

摘要：

A polysaccharide fraction (AQS-II) has been isolated from the hot aqueous extract of the fruits of an ectomycorrhizal fungus Astraeus hygrometricus. It was found to contain 63% polysaccharide and 35% protein. The polysaccharide part contains glucose, galactose, and fucose in a 2:1:1 molar ratio. On the basis of total acid hydrolysis, methylation analysis, periodate oxidation, and NMR studies (H-1, C-13, DQF-COSY, TOCSY, NOESY, HMBC, and HSQC) the structure of the repeating unit of the polysaccharide was established as B alpha-D-Glcp 1 down arrow 6 [1 -> 6)-alpha-D-Galp(1 -> 4)-beta-D-Glcp(1 ->] 2 D up arrow 1 beta-L-Fucp C (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：982 / 987

页数：6

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