Taxonomic group: bacteria / Proteobacteria
(Phylum: Proteobacteria)
Associated disease: infection due to Escherichia coli [ICD11:
XN6P4 
]
The structure was elucidated in this paperNCBI PubMed ID: 2673507Journal NLM ID: 0043535Publisher: Elsevier
Institutions: School of Pharmaceutical Sciences, Rhodes University, Grahamstown, South Africa
The structure of the capsular polysaccharide from Escherichia coli O9:K55 (N 24c) has been studied, using methylation analysis, degradation by bacteriophage, and n.m.r. spectroscopy. Depolymerisation of the K55 polysaccharide, using the lyase enzyme borne by Klebsiella phi 5, yielded a tri- and a hexa-saccharide, analysis of which indicated the following repeating unit. (formula; see text) This structure differs from that for the repeating unit of the capsular polysaccharide of Klebsiella K5 only in the position of acetylation (position 2 of the glucose residue).
Structure type: polymer chemical repeating unit
Compound class: K-antigen
Contained glycoepitopes: IEDB_115136,IEDB_137485,IEDB_140630,IEDB_142488,IEDB_144983,IEDB_146664,IEDB_152206,IEDB_423153,IEDB_983930,IEDB_983931,SB_192,SB_44,SB_72
Methods: 1H NMR, enzymatic degradation
Enzymes that release or process the structure: bacteriophage-borne glycosidase
Comments, role: CPS from Escherichia coli O9:K55 (N 24c).
NCBI Taxonomy refs (TaxIDs): 562
Show glycosyltransferases
There is only one chemically distinct structure:
Found 
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