Record ID No. |
727 |
Author(s) |
Chakraborty, I., Mondal, S., Rout, D., Chandra, K., Islam, S.S* , 2007 |
Affiliation |
Vidyasagar University, Department of Chemistry & Chemical Technology, W Midnapore 721102, W Bengal, India, *Email: sirajul_1999@yahoo.com |
Title |
Structural investigation of a heteroglycan isolated from the fruit bodies of an ectomycorrhizal fungus Astraeus hygrometricus |
Source. Vol.(no):Page |
Carbohydrate research. 342 (7):982-987p. |
Categories |
Ectomycorrhiza |
Subjects |
Biochemistry |
Sub-subjects |
Carbohydrate metabolism |
Organism |
Astraeus hygrometricus |
Country |
India, South Asia |
Abstracts |
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. |