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Mar. Drugs 2015, 13(11), 6723-6739; doi:10.3390/md13116723

Structure of an Amino Acid-Decorated Exopolysaccharide Secreted by a Vibrio alginolyticus Strain

1
Université Grenoble Alpes, CERMAV, CNRS, 38000 Grenoble, France
2
POLYMARIS BIOTECHNOLOGY, Aéropôle Centre, 29600 Morlaix, France
3
CODIF INTERNATIONAL, 35610 Roz-sur-Couesnon, France
*
Author to whom correspondence should be addressed.
Academic Editor: Antonio Trincone
Received: 17 August 2015 / Revised: 16 October 2015 / Accepted: 22 October 2015 / Published: 30 October 2015
(This article belongs to the Special Issue Marine Glycoconjugates)
View Full-Text   |   Download PDF [345 KB, uploaded 2 November 2015]   |  

Abstract

Vibrio alginolyticus (CNCM I-4994) secretes an exopolysaccharide that can be used as an ingredient in cosmetic applications. The structure was resolved using chromatography and one- and two-dimensional NMR spectroscopy experiments. The results show that the carbohydrate backbone is made of two residues: d-galacturonic acid and N-acetyl-d-glucosamine (GlcNac), which together constitute a tetrasaccharide repetition unit: [→3)-α-d-GalA-(1→4)-α-d-GalA-(1→3)-α-d-GalA-(1→3)-β-GlcNAc(1→]. Two amino acids, alanine and serine, are linked to GalA residues via amido linkages. The position and the distribution of the amino acids were characterized by two-dimensional NMR spectroscopy. To our knowledge, this is the first description of a structure for a marine exopolysaccharide decorated with an amino acid. View Full-Text
Keywords: exopolysaccharide; Vibrio alginolyticus; amino acids; ingredient exopolysaccharide; Vibrio alginolyticus; amino acids; ingredient
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Drouillard, S.; Jeacomine, I.; Buon, L.; Boisset, C.; Courtois, A.; Thollas, B.; Morvan, P.-Y.; Vallée, R.; Helbert, W. Structure of an Amino Acid-Decorated Exopolysaccharide Secreted by a Vibrio alginolyticus Strain. Mar. Drugs 2015, 13, 6723-6739.

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