Taxonomic group: bacteria / Proteobacteria
(Phylum: Proteobacteria)
Associated disease: infection due to Enterobacter [ICD11:
XN9W5 
];
infection due to Klebsiella [ICD11:
XN620 ]
The structure was elucidated in this paperNCBI PubMed ID: 3708628Publication DOI: 10.1016/0008-6215(86)80037-4Journal NLM ID: 0043535Publisher: Elsevier
Institutions: Department of Microbiology, University of Edinburgh, Edinburgh, UK, AFRC Food Research Institute (Norwich), Norwich, UK, Imperial Chemical Industries Plc, Biological Products Business, Billingham, UK
The gelling polysaccharide produced by a species of Enterobacter (NCIB 11870) contains L-fucose, D-glucose, and D-glucuronic acid in the ratios 1:2:1. Analysis of the methylated and methylated, carboxyl-reduced polysaccharide revealed terminal non-reducing glucose, (1→3)-linked fucose, (1→3,1→4)-linked glucose, and (1→4)-linked glucuronic acid in the ratios 1:1:1.2:0.8. From the results of Smith degradation of the polysaccharide and spectroscopic studies of the acidic tetra- and octa-saccharides produced by bacteriophage-induced enzymic depolymerization of the polysaccharide, the following tetrasaccharide repeating-unit is proposed. (Formula: see text). This repeating-unit is identical to that of the capsular polysaccharide produced by Klebsiella aerogenes serotype K54 except for the absence of O-acetyl groups. The effects of the O-acetyl groups on the secondary structure and rheological properties of these polysaccharides are discussed.
Structure type: polymer chemical repeating unit
Contained glycoepitopes: IEDB_115136,IEDB_136045,IEDB_140630,IEDB_142488,IEDB_142489,IEDB_144562,IEDB_146664,IEDB_152214,IEDB_174333,IEDB_983931,SB_192,SB_86
Methods: 1H NMR, methylation, periodate oxidation, FAB-MS, Smith degradation
Comments, role: Klebsiella K54: O-acetylated at positions 2 or 4 of the fucosyl residue
NCBI Taxonomy refs (TaxIDs): 547,
576Reference(s) to other database(s): CCSD:
15012, CBank-STR:8575
Show glycosyltransferases
There is only one chemically distinct structure:
Found 
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