The structure of the O-polysaccharide of the Pseudoalteromonas rubra ATCC 29570^T lipopolysaccharide containing a keto sugar

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• 作者：Michelle Kilcoyne ; Alexander S. Shashkov ; Yuriy A. Knirel ; Raisa P. Gorshkova ; Evgeny L. Nazarenko ; Elena P. Ivanova ; Natalya M. Gorshkova ; Sof’ ; ya N. Senchenkova and Angela V. Savage
• 关键词：Pseudoalteromonas rubra ; Polysaccharide ; NMR spectroscopy ; 2-Acetamido-2 ; 6-dideoxy-d-xylo-hexos-4-ulose ; Malic acid
• 刊名：Carbohydrate Research
• 出版年：2005
• 出版时间：2005
• 年：2005
• 卷：340
• 期：15
• 页码：2369-2375
• 全文大小：223 K

文摘

The structure of the phenol-soluble polysaccharide from Pseudoalteromonas rubra type strain ATCC 29570^T has been elucidated using ¹H and ¹³C NMR spectroscopy, including 2D COSY, TOCSY, gNOESY, ROESY, ¹H,¹³C gHMQC and gHMBC experiments. It is concluded that the trisaccharide repeating unit of the polysaccharide has the following structure: where Sug is 2-acetamido-2,6-dideoxy-d-xylo-hexos-4-ulose, Am is acetimidoyl and Acyl is a malic acid residue, which is O-acetylated in 70 % of the units.