<i>L. pneumophila</i>CMP-5,7-di-<i>N</i>-acetyllegionaminic acid synthetase (LpCLS)-involved chemoenzymatic synthesis of sialosides and analogues
作者:John B. McArthur、Abhishek Santra、Wanqing Li、Anoopjit S. Kooner、Ziqi Liu、Hai Yu、Xi Chen
DOI:10.1039/c9ob02476j
日期:——
5,7-Di-N-acetyllegionaminic acid (Leg5,7Ac2) is a bacterial nonulosonic acid (NulO) analogue of sialic acids, an important class of monosaccharides in mammals and in some bacteria. To develop efficient one-pot multienzyme (OPME) glycosylation systems for synthesizing Leg5,7Ac2-glycosides, Legionella pneumophila cytidine 5'-monophosphate (CMP)-Leg5,7Ac2 synthetase (LpCLS) was cloned and characterized
5,7-二-N-乙酰基硫磺酰胺酸(Leg5,7Ac2)是唾液酸的细菌壬二酸(NulO)类似物,是哺乳动物和某些细菌中的一类重要的单糖。为了开发用于合成Leg5,7Ac2-糖苷的高效一锅多酶(OPME)糖基化系统,克隆并鉴定了嗜肺军团杆菌胞苷5'-单磷酸酯(CMP)-Leg5,7Ac2合成酶(LpCLS)。它已成功用于通过一锅两酶系统由化学酶法合成的Leg5,7Ac2或其化学合成的六碳单糖前体2,4-二乙酰氨基-2,4,6-三脱氧甘露糖(一锅三酶系统中的6deoxyMan2,4diNAc)。此外,LpCLS还可以耐受Neu5Ac7NAc(Leg5的C9-羟基类似物),