Found 1 structure.
Displayed structure 1
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1. Compound ID: 10344
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b-D-GlcpNAc-(1-2)-+
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-4)-b-D-GlcpA-(1-3)-b-D-Galp-(1-3)-b-D-GalpNAc-(1- |
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Structure type: polymer biological repeating unit
; n=15
Compound class: O-polysaccharide, O-antigen
Contained glycoepitopes: IEDB_115136,IEDB_130648,IEDB_134627,IEDB_135813,IEDB_136044,IEDB_137340,IEDB_137472,IEDB_137473,IEDB_140630,IEDB_141794,IEDB_141807,IEDB_147450,IEDB_151531,IEDB_190606,IEDB_423153,SB_165,SB_166,SB_187,SB_195,SB_23,SB_24,SB_7,SB_8,SB_88
The structure is contained in the following publication(s):
- Article ID: 4294
Fontana C, Lundborg M, Weintraub A, Widmalm G "Structural studies and biosynthetic aspects of the O-antigen polysaccharide from Escherichia coli O174" -
Carbohydrate Research 354(1) (2012) 102-105
The structure of the repeating unit of the O-antigenic polysaccharide (PS) from Escherichia coli O174 has been determined. Component analysis together with (1)H and (13)C NMR spectroscopy experiments were employed to elucidate the structure. Inter-residue correlations were determined by (1)H,(13)C-heteronuclear multiple-bond correlation and (1)H,(1)H-NOESY experiments. The PS is composed of tetrasaccharide repeating units with the following structure: Cross-peaks of low intensity were present in the NMR spectra consistent with a β-D-GlcpNAc-(1→2)-β-D-GlcpA(1→ structural element at the terminal part of the polysaccharide, which on average is composed of approximately 15 repeating units. Consequently the biological repeating unit has a 3-substituted N-acetyl-d-galactosamine residue at its reducing end.
Lipopolysaccharide, NMR, Escherichia coli, biological repeating unit
NCBI PubMed ID: 22572125Publication DOI: 10.1016/j.carres.2012.02.020Journal NLM ID: 0043535Publisher: Elsevier
Correspondence: G. Widmalm
Institutions: Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm, Sweden
Methods: 13C NMR, 1H NMR, GLC-MS, NMR-2D, sugar analysis, GLC, NMR-1D
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