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阪崎克罗诺杆菌 O1 型 O 多糖的结构,含有 3-(N-乙酰-l-丙氨酰基)-3,6-二脱氧-d-葡萄糖。

Structure of the O-polysaccharide of Cronobacter sakazakii O1 containing 3-(N-acetyl-l-alanyl)amino-3,6-dideoxy-d-glucose.

机构信息

Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation.

出版信息

Carbohydr Res. 2010 Sep 23;345(14):2095-8. doi: 10.1016/j.carres.2010.07.013. Epub 2010 Jul 22.

Abstract

The O-polysaccharide (O-antigen) was released by mild acid hydrolysis of the lipopolysaccharide of Cronobacter sakazakii ATCC 29544(T) (serotype O1) and studied by composition analysis and Smith degradation, in addition to 1D and 2D (1)H and (13)C NMR spectroscopy. The following structure of the pentasaccharide repeating unit of the O-polysaccharide was established: [Formula: see text] where d-Qui3NAcyl stands for 3-(N-acetyl-l-alanyl)amino-3,6-dideoxy-d-glucose. The same composition but a different structure has been reported earlier for the O-polysaccharide of C. sakazakii 3290 [MacLean, L. L.; Pagotto, F.; Farber, J. M.; Perry, M. B. Biochem. Cell Biol.2009, 87, 459-465].

摘要

O-多糖(O-抗原)通过阪崎克罗诺杆菌 ATCC 29544(T)(血清型 O1)脂多糖的温和酸水解释放,并通过组成分析和 Smith 降解、一维和二维(1)H 和(13)C NMR 光谱进行研究。确定了 O-多糖五糖重复单元的如下结构:[公式:见正文],其中 d-Qui3NAcyl 代表 3-(N-乙酰-l-丙氨酰)氨基-3,6-二脱氧-d-葡萄糖。O-多糖的组成相同但结构不同,先前已有报道称 C. sakazakii 3290 的 O-多糖也具有这种结构[MacLean, L. L.; Pagotto, F.; Farber, J. M.; Perry, M. B. Biochem. Cell Biol.2009, 87, 459-465]。

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