Taxonomic group: bacteria / Proteobacteria
(Phylum: Proteobacteria)
Associated disease: infection due to Escherichia coli [ICD11:
XN6P4 
]
NCBI PubMed ID: 3928159Journal NLM ID: 0043535Publisher: Elsevier
Institutions: Central Research Institute for Chemistry of the Hungarian Academy of Sciences, H-1025 Budapest, Hungary
The proton-decoupled, Fourier-transform, 13C-n.m.r. spectra of the two anomeric sodium (methyl 3-deoxy-7-O-β-D-ribofuranosyl-α- and β-D-manno-2-octulopyranosid)onates, of the two anomeric sodium [methyl 3-deoxy-7-O-(2-O-β-D-ribofuranosyl-β-D-ribofuranosyl)-α- or -β-D-manno-2-octulopyranosid]onates, and of methyl 2-O-β-D-ribofuranosyl-β-D-ribofuranoside have been recorded. The constitutions of these compounds correspond to repeating units and partial structures of the capsular polysaccharides from Escherichia coli K 13, K 20, K 23, and LP 1092 strains. The 13C-n.m.r.-line patterns of these oligosaccharide derivatives and the corresponding polysaccharides show striking differences dependent upon the anomeric configurations of the KDO residues. These differences may be used for the identification, by visual or computer-assisted pattern analysis, of the anomeric configurations of KDO-residues in oligo- or poly-saccharides. Thus, it was confirmed that the KDO residues in the K 13, K 20, and K 23 polysaccharides have the beta anomeric configuration, whereas those in the LP 1092 polysaccharide have the alpha anomeric configuration.
Structure type: oligomer
Location inside paper: 4
Compound class: K-antigen
Contained glycoepitopes: IEDB_130650,IEDB_149136
Methods: 13C NMR, 1H NMR
Related record ID(s): 114402, 114403, 114404
NCBI Taxonomy refs (TaxIDs): 562Reference(s) to other database(s): GlycomeDB:
5241
Show glycosyltransferases
There is only one chemically distinct structure:
Found 
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