STRUCTURAL STUDIES OF THE VIBRIO-CHOLERAE O-3 O-ANTIGEN POLYSACCHARIDE

被引:37
作者
CHOWDHURY, TA [1 ]
JANSSON, PE [1 ]
LINDBERG, B [1 ]
LINDBERG, J [1 ]
GUSTAFSSON, B [1 ]
HOLME, T [1 ]
机构
[1] KAROLINSKA INST, DEPT BACTERIOL, S-10401 STOCKHOLM 60, SWEDEN
关键词
D O I
10.1016/0008-6215(91)84029-E
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
The structure of the Vibrio cholerae O:3 O-antigen polysaccharide has been investigated, mainly by n.m.r. spectroscopy, mass spectrometry, sugar and methylation analysis, and specific degradations, and is proposed to involve the following tetrasaccharide repeating-unit. [GRAPHICS] In this structure, D-D-Hep is D-glycero-D-manno-heptose, Asc is 3,6-dideoxy-L-arabino-hexose (ascarylose), and Sug is 2,4-diamino-2,4,6-trideoxy-D-glucose (bacillosamine) in which N-2 is acetylated and N-4 is acylated with a 3,5-dihydroxyhexanoic acid. That the 2,4-diamino-2,4,6-trideoxy-D-glucose residue is linked through O-3 and not through one of the hydroxyl groups in the 3,5-dihydroxyhexanoyl group is indicated but not definitely proved. The configuration of the latter group has not been determined. The f.a.b.-mass spectrum of the methylated O-antigen indicates that the structure given above also represents the biological repeating-unit.
引用
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页码:303 / 314
页数:12
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