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Structural studies of the O-antigen from Vibrio cholerae O:21

✍ Scribed by Akbar Ali Ansari; Lennart Kenne; Bengt Lindberg; Björn Gustafsson; Tord Holme

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
431 KB
Volume
150
Category
Article
ISSN
0008-6215

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✦ Synopsis

The O-antigen from Vibrio choleme 0:21 has been investigated, using n.m.r. spectroscopy, methylation analysis, and Smith degradation as the main methods. It is concluded that the O-antigen is composed of tetrasaccharide repeating-units having the following structure (in which Hep = D-glycero-D-manno-heptose). cr-I,-Rhap : 3 +3)-/l-D-GlcpNAc-(1+7)+Hepp-(l+ 4 1 /3-D-GalpNAc INTRODUCMON The species Vibrio cholerue is divided into several serogroups on the basis of their O-antigens. The disease Asiatic cholera is caused only by strains belonging to serogroup 0: 1. In addition, there are at least 72 additional serogroups of V. cholerue, collectively known as non-O:1 V. chobrue. In the past, the non-O:1 V. choleme have been inappropriately designated' as nonagglutinating (NAG) or noncholera vibrios (NCV). Non-O: 1 V. ckolerue have caused sporadic cases of gastrointestinal illness and have occasionally been isolated from persons with extraintestinal d&a&. A *Dedicated to Professor N. K. Kochetkov.

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