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Structure of the O56 antigen of Escherichia coli, a polysaccharide containing 7-substituted α-N-acetylneuraminic acid

✍ Scribed by Grigorij Kogan; Alexander S. Shashkov; Barbara Jann; Klaus Jann

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 616 KB
Volume: 238
Category: Article
ISSN: 0008-6215
DOI: 10.1016/0008-6215(93)87018-n

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✦ Synopsis

The 056 polysaccharide moiety of the 056 antigen (LPS) consists of D-glucose, o-galactose, 2-acetamido-2-deoxy-o-glucose, and N-acetylneuraminic acid in the molar ratios 1: 1: 1: 1. Methylation analysis, periodate oxidation, mild acid hydrolysis, as well as 'H and 13C NMR spectroscopy showed that the 056 polysaccharide has the primary structure + 3)-/3-D-GlcpNAc_(l + 3)_p-~-Gkp-(l + 7)a-NeuHc-(2 --) 2

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