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Open AccessArticle

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