Structure and gene cluster of the O-antigen of Escherichia coli O36.
نویسندگان
چکیده
The O-polysaccharide (O-antigen) of Escherichia coli O36 was isolated from the lipopolysaccharide and studied by sugar analyses and Smith degradation along with (1)H and (13)C NMR spectroscopy. The following structure of the branched pentasaccharide repeating unit was established, which is unique among the known structures of bacterial polysaccharides: The O-antigen gene cluster of E. coli O36 has been sequenced. The gene functions were tentatively assigned by comparison with sequences in the available databases and found to be in full agreement with the O-polysaccharide structure.
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عنوان ژورنال:
- Carbohydrate research
دوره 420 شماره
صفحات -
تاریخ انتشار 2011