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

✍ Scribed by Stephen G. Wilkinson; Mark C. Rex

Publisher: Elsevier Science
Year: 1983
Tongue: English
Weight: 645 KB
Volume: 112
Category: Article
ISSN: 0008-6215
DOI: 10.1016/0008-6215(83)88269-x

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✦ Synopsis

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.

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