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Updated: Jul 3, 2026

Separating Bacteria by Capsule Amount Using a Discontinuous Density Gradient
Published on: January 7, 2019
Structural elucidation of the capsular polysaccharide isolated from Kaistella flava
Valentina Gargiulo1, Cristina De Castro, Rosa Lanzetta
1Department of Organic Chemistry and Biochemistry, University of Naples 'Federico II', Complesso Universitario Monte Sant' Angelo, Via Cintia 4, I-80126 Napoli, Italy.
Abstract:
The Gram-negative bacterium under study belongs to the genus Kaistella. It was isolated from a soil sample of the Haian Island in China, and it produces a lipophilic polysaccharide characterised by a branched hexasaccharide repeating unit, counting four 6-deoxy-alpha-l-mannose (Rha) residues, one 2-acetamido-2-deoxy-beta-d-glucose (GlcNAc) and a 2-acetamido-2,6-dideoxy-beta-d-galactose (FucNAc) unit. The structure of the repeating unit, assigned through 2D-NMR spectroscopy, is herein reported for the first time: [carbohydrate structure: see text]
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