Taxonomic group: bacteria / Proteobacteria
(Phylum: Proteobacteria)
Associated disease: infection due to Escherichia coli [ICD11:
XN6P4 
]
The structure was elucidated in this paperNCBI PubMed ID: 2161284Publication DOI: 10.1016/0008-6215(90)84109-8Journal NLM ID: 0043535Publisher: Elsevier
Institutions: Max-Planck-Institut für Immunbiologie, Freiburg-Zähringen, F.R.G.
The capsular K11 antigen of Escherichia coli contains glucose, fructose, and phosphate in the molar ratios 2:1:1, and a backbone of -4)-β-D-glucopyranosyl-(1→4)-α-D-glucopyranosyl phosphate-(1→ to which β-D-fructofuranose is linked at position 3 of the β-D-glucopyranosyl residue. The fructose, which is the immunodominant sugar of the K11 antigen, is released from the polysaccharide under mild acidic conditions (70 degrees, pH 5.0).
Structure type: polymer chemical repeating unit
Location inside paper: p. 105, table III, structure 1
Compound class: CPS, K-antigen
Contained glycoepitopes: IEDB_142488,IEDB_144998,IEDB_145002,IEDB_146664,IEDB_983931,SB_192
Methods: 13C NMR, methylation, periodate oxidation, GLC-MS, ELISA, GLC
Comments, role: E. coli O13:K11:H11 strain Su4321-41
Related record ID(s): 2619, 2620
NCBI Taxonomy refs (TaxIDs): 562Reference(s) to other database(s): GTC:G54796BU, GlycomeDB:
16774
Show glycosyltransferases
NMR conditions: in D2O at 298(C) K
[as TSV]
13C NMR data:
Linkage Residue C1 C2 C3 C4 C5 C6
0,4,3 bDFruf 61.3 104.4 80.1 75.3 81.1 63.0
0,4 bDGlcp 103.5 73.8 75.3 75.2 76.6 60.7
0 aDGlcp 95.9 71.8 72.3 78.0 72.0 60.5
P
1H NMR data:
missing...
13C NMR data:
| Linkage | Residue | C1 | C2 | C3 | C4 | C5 | C6 |
|---|
| 0,4,3 | bDFruf | 61.3 | 104.4 | 80.1 | 75.3 | 81.1 | 63.0 |
| 0,4 | bDGlcp | 103.5 | 73.8 | 75.3 | 75.2 | 76.6 | 60.7 |
| 0 | aDGlcp | 95.9 | 71.8 | 72.3 | 78.0 | 72.0 | 60.5 |
| | P | |
|
There is only one chemically distinct structure:
Found 
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