Journal of Carbohydrate Chemistry p. 301 - 314 (2016)
Update date:2022-08-04
Topics:
Awad, Faisal Nureldin
Kulinich, Anna
Yao, Ming Jun
Duan, Xu Chu
Cai, Zhi Peng
Gu, Bin
Liu, Li
Voglmeir, Josef
Maltose phosphorylases (EC 2.4.1.8) catalyze the reversible conversion of maltose to glucose and glucose-1-phosphate in the presence of inorganic phosphate. Herein, we describe for the first time the use of a maltose phosphorylase for the synthesis of various anomerically modified diglycosides. The maltose phosphorylase used was isolated from the bacterium Emticicia oligotrophica and showed a high selectivity towards the phosphorolysis of maltose, whereas no phosphorolysis was observed using other glucose-containing disaccharides such as cellobiose, melibiose, sucrose and trehalose. The addition of glucose to various 5-bromo-4-chloro-3-indolyl-glycosides (X-sugars) was used to evaluate the promiscuity of the maltose phosphorylase, and product formation was verified by LC-ESI-MS and MALDI-TOF-MS. The simple expression and purification protocol and the use of maltose as an inexpensive starting material make this maltose phosphorylase from Emticicia oligotrophica a valuable novel biocatalyst for the synthesis of glucose-containing glycosides.
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