Structure of an acidic glycan from the reference strain for Serratia marcescens serogroup O22.
In addition to a neutral glycan, lipopolysaccharide extracts from the reference strain for Serratia marcescens serogroup O22 contain an acidic polymer which probably defines the serogroup and is of microcapsular origin. The polymer is doubly branched with a heptasaccharide repeating unit and a galactan backbone. By means of spectroscopic and degradative studies, the structure of the repeating unit was established as that shown. [formula: see text]
Oxley
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School of Chemistry, University, Hull, United Kingdom.
Wilkinson
S G
SG
D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D002851:Chromatography, High Pressure Liquid; D007202:Indicators and Reagents; D009682:Magnetic Resonance Spectroscopy; D008745:Methylation; D008969:Molecular Sequence Data; D015394:Molecular Structure; D009844:Oligosaccharides / Q000737:chemistry / Q000302:isolation & purification; D011135:Polysaccharides, Bacterial / Q000737:chemistry* / Q000302:isolation & purification; D012706:Serratia marcescens / Q000737:chemistry* / Q000145:classification; D016339:Spectrometry, Mass, Fast Atom Bombardment
D007202:Indicators and Reagents; D009844:Oligosaccharides; D011135:Polysaccharides, Bacterial