Electronic Resource
Oxford, UK
:
Blackwell Publishing Ltd
FEMS microbiology letters
29 (1985), S. 0
ISSN:
1574-6968
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
Abstract The capsular K51 antigen of E.coli was isolated from a liquid culture of E.coli 01:K51:H− by Cetavlon precipitation. After purification it was obtained in a yield of about 80 mg/l. The polymer consisted of equimolar amounts of N-acetylglucosamine and phosphate and contained about 1.6 O-acetyl groups per N-acetylglucosamine residue. After de-O-acetylation it was resistant to periodate oxidation. Mild acid hydrolysis yielded N-acetylglucosamine-3-phosphate. With the aid of 13C- and 31P-NMR spectroscopy it was ascertained that the K51 antigen is a poly-α-1.3-N-acetylglucosamine phosphate, in which most of the hydroxyl groups at C4 and C6 of the N-acetylglucosamine residue are acetylated.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1574-6968.1985.tb00872.x
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