粘质沙雷氏菌N.C.T.C. 1377的O-特异性多糖的结构研究

Structural studies of the O-specific polysaccharide from Serratia marcescens N.C.T.C. 1377.

作者信息

Wilkinson S G, Rex M C

出版信息

Carbohydr Res. 1983 Jan 16;112(1):95-103. doi: 10.1016/0008-6215(83)88269-x.

Abstract

The putative O-specific polysaccharide of Serratia marcescens N.C.T.C. 1377 is a partially acetylated glucorhamnan. By means of 1H- and 12C-n.m.r. spectroscopy, methylation analysis, and periodate oxidation, it was shown that the polymer has a disaccharide repeating-unit for which the following structure is proposed: leads to 4)-alpha-D-Glcp-(1 leads to 3)-beta-L-Rhap-(1-leads. O-Acetyl groups are probably located at C-2 of the rhamnopyranosyl residues. Except for the extent of O-acetylation, the polysaccharide is identical with the corresponding product from S. marcescens Bizio (A.T.C.C. 264), for which a different structure has previously been proposed.

摘要

粘质沙雷氏菌N.C.T.C. 1377假定的O-特异性多糖是一种部分乙酰化的葡糖鼠李聚糖。通过1H和13C核磁共振光谱、甲基化分析和高碘酸盐氧化表明，该聚合物具有一个二糖重复单元，其结构如下：→4)-α-D-葡萄糖-(1→3)-β-L-鼠李糖-(1-。O-乙酰基可能位于鼠李吡喃糖基残基的C-2位。除了O-乙酰化程度外，该多糖与粘质沙雷氏菌比齐奥菌（A.T.C.C. 264）的相应产物相同，此前已对后者提出了不同的结构。