Tailormade Polysaccharides with Defined Branching Patterns: Enzymatic Polymerization of Arabinoxylan Oligosaccharides
作者:Deborah Senf、Colin Ruprecht、Saina Kishani、Aleksandar Matic、Guillermo Toriz、Paul Gatenholm、Lars Wågberg、Fabian Pfrengle
DOI:10.1002/anie.201806871
日期:2018.9.10
nature of non‐cellulosic polysaccharides, such as arabinoxylan, makes it difficult to correlate molecular structure with macroscopic properties. To study the impact of specific structural features of the polysaccharides on crystallinity or affinity to other cell wall components, collections of polysaccharides with defined repeating units are required. Herein, a chemoenzymatic approach to artificial
非纤维素多糖(如阿拉伯木聚糖)的异质性使得难以将分子结构与宏观特性相关联。为了研究多糖的特定结构特征对结晶度或对其他细胞壁成分的亲和力的影响,需要收集具有确定的重复单元的多糖。在本文中,描述了化学酶促方法来制备具有系统地改变的分支模式的人工阿拉伯木聚糖多糖。多糖是通过糖合酶催化的阿拉伯糖基木聚糖寡糖衍生的糖基氟化物聚合而获得的。纤维素表面的X射线衍射和吸附实验表明,合成多糖的理化性质强烈取决于其取代模式的特定性质。人造多糖允许进行其他方法无法访问的结构与性质之间的关系研究。