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Solution Conformation and Dynamics of the O-Antigen of the Major Lipopolysaccharide from Sinorhizobium fredii SMH12

✍ Scribed by Francisco J. Fernández de Córdoba; Miguel A. Rodríguez-Carvajal; Francisco J. Cañada; Pilar Tejero-Mateo; Antonio M. Gil-Serrano; Jesús Jiménez-Barbero

Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 456 KB
Volume: 2008
Category: Article
ISSN: 1434-193X
DOI: 10.1002/ejoc.200800190

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✦ Synopsis

Abstract

The conformational and dynamic behavior of the O‐antigen of the lipopolysaccharide of Sinorhizobium fredii SMH12, a wide‐range host bacterium isolated from nodulated soybean plants growing in Vietnam, was studied. The O‐antigenhas a repeating unit consisting of the trisaccharide →4)‐α‐D‐Gal__p__A‐(1→3)‐2‐O‐Ac‐α‐L‐Rha__p__‐(1→3)‐2‐O‐Ac‐α‐D‐Man__p__‐(1→, where the O‐6 position of the mannose residue in the repeating unit is unsubstituted, acetylated, or methylated in an approximate ratio 1:1:2. For the analysis of the conformational and dynamic behavior, the deacetylated polysaccharide was employed. A combination of NMR spectroscopic methods assisted by molecular mechanics and dynamic simulations was employed to deduce its major conformational and dynamic features. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)

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