Structure of an acidic polysaccharide from the agar-decomposing marine bacterium Pseudoalteromonas atlantica strain IAM 14165 containing 5,7-diacetamido-3,5,7,9-tetradeoxy-l-glycero-l-manno-non-2-ulosoni

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• 作者：Perepelov ; Andrei V. ; Shashkov ; Alexander S. ; Torgov ; Vladimir I. ; Nazarenko ; Evgeny L. ; et. al.
• 关键词：Pseudoalteromonas atlantica ; Polysaccharides ; Structure ; NMR spectroscopy ; Marine bacteria ; 5 ; 7-Diacetamido-3 ; 5 ; 7 ; 9-tetradeoxy-l-glycero-l-manno-non-2-ulosonic acid ; Pseudaminic acid
• 刊名：Carbohydrate Research
• 出版年：2005
• 期刊代码：15_00086215
• 类别：ch
• 出版时间：January 17, 2005
• 卷：340
• 期：1
• 页码：69-74
• 文件大小：345 K

摘要

The structure of an acidic polysaccharide from Pseudoalteromonas atlantica strain 14165 containing 5,7-diacetamido-3,5,7,9-tetradeoxy-l-glycero-l-manno-non-2-ulosonic acid (di-N-acetylpseudaminic acid, Pse5Ac7Ac) has been elucidated. The polysaccharide was studied by ¹H and ¹³C NMR spectroscopy, including 2D experiments, along with sugar and methylation analyses. After a selective hydrolysis a modified polysaccharide devoid of its side chain could be isolated. It was found that the polysaccharide has pentasaccharide repeating units with following structure: