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Structure of the Exopolysaccharide Secreted by a Marine Strain Vibrio alginolyticus.

Authors :
Drouillard S
Jeacomine I
Buon L
Boisset C
Courtois A
Thollas B
Morvan PY
Vallée R
Helbert W
Source :
Marine drugs [Mar Drugs] 2018 May 15; Vol. 16 (5). Date of Electronic Publication: 2018 May 15.
Publication Year :
2018

Abstract

Vibrio alginolyticus (CNCM I-4151) secretes an exopolysaccharide whose carbohydrate backbone is decorated with amino acids, likely conferring its properties that are appreciated in cosmetics. Here, the secreted polysaccharide of another strain of V. alginolyticus (CNCM I-5034) was characterized by chromatography and one- and two-dimensional NMR spectroscopy experiments. The structure was resolved and shows that the carbohydrate backbone is made of four residues: D-galactose (Gal), D-galacturonic acid (GalA) D-N-acetylglucosamine (GlcNAc) and D-glucuronic acid (GlcA), forming a tetrasaccharide repetition unit [→4)-β-d-GlcA-(1→3)-α-d-Gal-(1→3)-α-d-GalA-(1→3)-β-GlcNAc(1→]. GlcA is derivatized with a lactate group giving 'nosturonic acid', and GalA is decorated with the amino acid alanine.<br />Competing Interests: The authors declare no conflict of interest.

Details

Language :
English
ISSN :
1660-3397
Volume :
16
Issue :
5
Database :
MEDLINE
Journal :
Marine drugs
Publication Type :
Academic Journal
Accession number :
29762521
Full Text :
https://doi.org/10.3390/md16050164