Gorshkova R P, Nazarenko E L, Zubkov V A, Ivanova E P, Ovodov Iu S, Shashkov A S, Knirel' Iu A
Bioorg Khim. 1993 Mar;19(3):327-36.
An acidic capsular and an O-specific polysaccharide were isolated from the marine microorganism Alteromonas haloplanktis KMM 156. Both polysaccharides have the identical structure and are built up of tetrasaccharide repeating units, containing two residues of L-rhamnose as well as a 2-acetamido-2-deoxy-D-glucose and a 3-O-[(R)-1-carboxyethyl]-D-glucose (Glc3Lac) residue. On the basis of methylation studies, 1H- and 13C-NMR-spectroscopy including nuclear Overhauser effect and two-dimensional heteronuclear 13C/1H correlation spectroscopy, the following structure was suggested for the polysaccharide repeating unit: [formula: see text]
从海洋微生物嗜盐浮游交替单胞菌KMM 156中分离出一种酸性荚膜多糖和一种O-特异性多糖。这两种多糖具有相同的结构,由四糖重复单元组成,包含两个L-鼠李糖残基以及一个2-乙酰氨基-2-脱氧-D-葡萄糖和一个3-O-[(R)-1-羧乙基]-D-葡萄糖(Glc3Lac)残基。基于甲基化研究、包括核Overhauser效应的1H和13C NMR光谱以及二维异核13C/1H相关光谱,推测该多糖重复单元具有以下结构:[化学式:见原文]