Structure and genetics of the O-antigens of Escherichia coli O182-O187
Copyright © 2016 Elsevier Ltd. All rights reserved..
O-polysaccharides (OPSs) were obtained by mild acid degradation of the lipopolysaccharides of Escherichia coli O182-O187, and their structures were established by sugar analysis, Smith degradation, and 1H and 13C NMR spectroscopy. In addition to the monosaccharides that occur often in E. coli OPSs (d-Glc, d-Gal, d-Man, d-GlcNAc, d-GalNAc, d-GlcA, l-Fuc, d-Rib), a number of less common components were identified as the OPS constituents, including 2-acetamido-2-deoxy-l-quinovose and 4-deoxy-4-[(S)-3-hydroxybutanoyl-l-alanyl]-d-quinovose (O186), 3-acetamido-3-deoxy-d-fucose (O187), 3-deoxy-3-[(R)-3-hydroxybutanoyl]-d-fucose (O184), and 2,3-diacetamido-2,3-dideoxy-l-rhamnose (O182). The OPS structures of E. coli O183 and O182 are identical to those of the OPS of Shigella boydii type 10 and the capsular polysaccharide of E. coli K48, respectively. The OPSs of E. coli O186 and O123 are closely related differing in the presence of a Glc residue in the former in place of a GlcNAc residue in the latter. The O-antigen gene clusters of the bacteria studied were analyzed and their contents were found to be consistent with the OPS structures. Predicted glycosyltransferases encoded in the gene clusters were tentatively assigned to glycosidic linkages based on similarities to sequences of other E. coli O-serogroups available from GenBank and taking into account the OPS structures established.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2016 |
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| Erschienen: |
2016 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:435 |
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| Enthalten in: |
Carbohydrate research - 435(2016) vom: 29. Nov., Seite 58-67 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Senchenkova, Sof'ya N [VerfasserIn] |
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| Links: |
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| Themen: |
Bacterial polysaccharide structure |
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| Anmerkungen: |
Date Completed 27.02.2017 Date Revised 27.02.2017 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.carres.2016.09.014 |
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| 520 | |a Copyright © 2016 Elsevier Ltd. All rights reserved. | ||
| 520 | |a O-polysaccharides (OPSs) were obtained by mild acid degradation of the lipopolysaccharides of Escherichia coli O182-O187, and their structures were established by sugar analysis, Smith degradation, and 1H and 13C NMR spectroscopy. In addition to the monosaccharides that occur often in E. coli OPSs (d-Glc, d-Gal, d-Man, d-GlcNAc, d-GalNAc, d-GlcA, l-Fuc, d-Rib), a number of less common components were identified as the OPS constituents, including 2-acetamido-2-deoxy-l-quinovose and 4-deoxy-4-[(S)-3-hydroxybutanoyl-l-alanyl]-d-quinovose (O186), 3-acetamido-3-deoxy-d-fucose (O187), 3-deoxy-3-[(R)-3-hydroxybutanoyl]-d-fucose (O184), and 2,3-diacetamido-2,3-dideoxy-l-rhamnose (O182). The OPS structures of E. coli O183 and O182 are identical to those of the OPS of Shigella boydii type 10 and the capsular polysaccharide of E. coli K48, respectively. The OPSs of E. coli O186 and O123 are closely related differing in the presence of a Glc residue in the former in place of a GlcNAc residue in the latter. The O-antigen gene clusters of the bacteria studied were analyzed and their contents were found to be consistent with the OPS structures. Predicted glycosyltransferases encoded in the gene clusters were tentatively assigned to glycosidic linkages based on similarities to sequences of other E. coli O-serogroups available from GenBank and taking into account the OPS structures established | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Bacterial polysaccharide structure | |
| 650 | 4 | |a Escherichia coli | |
| 650 | 4 | |a Lipopolysaccharide | |
| 650 | 4 | |a O-antigen | |
| 650 | 4 | |a O-antigen gene cluster | |
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| 700 | 1 | |a Guo, Xi |e verfasserin |4 aut | |
| 700 | 1 | |a Naumenko, Olesya I |e verfasserin |4 aut | |
| 700 | 1 | |a Shashkov, Alexander S |e verfasserin |4 aut | |
| 700 | 1 | |a Perepelov, Andrei V |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Bin |e verfasserin |4 aut | |
| 700 | 1 | |a Knirel, Yuriy A |e verfasserin |4 aut | |
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