Journal
GLYCOCONJUGATE JOURNAL
Volume 28, Issue 1, Pages 39-47Publisher
SPRINGER
DOI: 10.1007/s10719-010-9322-1
Keywords
Bacterial glycosylation; Glycoengineering; Fucosylation; Lewis Y; Chimeric LOS
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Funding
- SNF [31003A_127098/1]
- European Community [MEST-CT-2004-5033]
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We recently described the design of Escherichia coli K12 and Salmonella enterica sv Typhimurium to display the gangliomannoside 3 (GM3) antigen on the cell surface [1]. We report here the fucosylation of modified lipooligosaccharide in a recombinant E.coli strain with a truncated lipid A core due to deletion of the core glycosyltransferases genes waaO and waaB. This truncated structure was used as a scaffold to assemble the Lewis Y motif by consequent action of the heterologously expressed beta-1,4 galactosyltransferase LgtE (Neisseria gonorrheae), the beta-1,3 N-acetylglucosaminyltransferase LgtA and the beta-1,3 galactosyltransferase LgtB from Neisseria meningitidis, as well as the alpha-1,2 and alpha-1,3 fucosyltransferases FutC and FutA from Helicobacter pylori. We show the display of the Lewis Y structure by immunological and chemical analysis.
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