作者:Ruohan Wei、Han Liu、Xuechen Li
DOI:10.1038/s41429-019-0170-3
日期:2019.6
an oral bacteria related to various types of diseases. As Gram-negative bacteria, lipopolysaccharide (LPS) of Fusobacterium nucleatum could be a potential virulence factor. Recently, the structure of O-antigen in LPS of Fusobacterium nucleatum strain 25586 was elucidated to contain a trisaccharide repeating unit -(4-β-Nonp5Am-4-α-L-6dAltpNAc3PCho-3-β-D-QuipNAc)-. The nonulosonic acid characterized as
核梭菌是一种与各种疾病有关的口腔细菌。作为革兰氏阴性菌,核梭菌的脂多糖(LPS)可能是潜在的致病因子。最近,阐明了核梭状芽胞杆菌菌株25586的LPS中的O-抗原结构,其包含三糖重复单元-(4-β-Nonp5Am-4-α-L-6dAltpNAc3PCho-3-β-D-QuipNAc)-。表征为5-乙酰氨基-3,5,9-三苯氧基-L-甘油-L-葡萄糖-非-2-磺酸的壬二酸(命名为fusaminic acid)和2-乙酰氨基-2,6-dideoxy-L -altrose是分离的新型单糖。在本文中,我们报道了5-N-乙酰基次品酸和硫代糖苷衍生物的从头合成,以进一步研究壬二酸对细菌发病的生物学意义。