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Structure and genetics of the O-antigen of Escherichia coli 0158
被引:5
|作者:
Perepelov, Andrei V.
[1
]
Wang, Quan
[2
]
Shashkov, Alexander S.
[1
]
Wen, Liuqing
[2
]
Wang, Lei
[2
]
Knirel, Yuriy A.
[1
]
机构:
[1] Russian Acad Sci, ND Zelinskii Organ Chem Inst, Moscow 119991, Russia
[2] Nankai Univ, TEDA, TEDA Sch Biol Sci & Biotechnol, Tianjin 300071, Peoples R China
基金:
美国国家科学基金会;
俄罗斯基础研究基金会;
关键词:
Escherichia coli;
O-Polysaccharide structure;
O-Antigen;
O-Antigen gene cluster;
D O I:
10.1016/j.carres.2011.07.021
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
A structure of the O-polysaccharide (O-antigen) of Escherichia coli 0158 has been reported (Datta, A. K.; Basu, S.; Roy, N. Carbohydr. Res. 1999, 322, 219-227). In this work, we reinvestigated the 0158 polysaccharide using sugar analyses, Smith degradation, and (1)H and (13)C NMR spectroscopy and established the following structure, which is at variance with the structure established earlier: alpha-L-Rhap3,4Ac 1 down arrow 3 -> 4)-beta-D-ManpNAc-(1 -> 4)-alpha-D-GalpA-(1 -> 3)-beta-D-GlcpNAc-(1 -> 6 up arrow 1 beta-D-Glcp This structure is in agreement with the predicted functions of genes found in the O-antigen gene cluster of E. coli 0158. (C) 2011 Published by Elsevier Ltd.
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页码:2274 / 2277
页数:4
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