Structural elucidation of the polysaccharide moiety of a glycopeptide (GLPCW-II) from Ganoderma lucidum fruiting bodies
文献类型: 外文期刊
作者: Ye, LiBin 1 ; Zhang, JingSong 1 ; Ye, XiJun 3 ; Tang, QingJiu 1 ; Liu, YanFang 1 ; Gong, ChunYu 4 ; Du, XiuJui 2 ; Pan, Y 1 ;
作者机构: 1.Shanghai Acad Agr Sci, Inst Edible Fungi, Shanghai 201106, Peoples R China
2.Nanjing Agr Univ, Coll Life Sci, Jiangsu 210095, Peoples R China
3.Nanjing Agr Univ, Coll Informat Sci & Technol, Jiangsu 210095, Peoples R China
4.Shanghai Fisheries Univ, Coll Food Sci, Shanghai 200090, Peoples R China
关键词: Ganoderma lucidum;glycopeptide;NMR spectroscopy;polysaccharide moiety;structural analysis;CAPILLARY GLC;MONOSACCHARIDES;CONFIGURATION
期刊名称:CARBOHYDRATE RESEARCH ( 影响因子:2.104; 五年影响因子:2.192 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: A water-soluble glycopeptide (GLPCW-II) was isolated from the fruiting bodies of Ganoderma lucidum by DEAE-Sepharose Fast-Flow and Sephacryl S-300 High Resolution Chromatography. The glycopeptide had a molecular weight of 1.2 x 10(4) Da (determined by HPLC), and consisted of similar to 90% carbohydrate and similar to 8% protein as determined using the phenol-sulfuric acid method and the BCA (TM) protein assay reagent kit, respectively. The polysaccharide moiety was composed mainly of D-Glc, L-Fuc, and D-Gal in the ratio of 1.00:1.09:4.09. To facilitate structure-activity studies, the structure of the GLPCW-II polysaccharide moiety was elucidated using H-1 and C-13 NMR spectroscopy including COSY, TOCSY, HMBC, HSQC, and ROESY, combined with GC-MS of methylated derivatives, and shown to consist of repeating units with the following structure: [GRAPHICS] (c) 2007 Elsevier Ltd. All rights reserved.
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