STRUCTURE OF THE O-10 ANTIGEN OF STENOTROPHOMONAS (XANTHOMONAS) MALTOPHILIA

A polysaccharide containing L-rhamnose and L-xylose was isolated from the lipopolysaccharide extracted from the cell walls of the reference strain for Stenotrophomonas (Xanthomonas) maltophilia serogroup 010. B y means of NMR studies and methylation analysis, the repeating unit of the polymer was identified as a branched tetrasaccharide of the struc ture shown. [GRAPHICS] itable for use in HF experiments as described i n this article. The reactor has the advantages of multiple independent reaction vessels, means to precisely measure liquid KF, means to add measured volumes of reagents directly to the closed reaction vessels d uring the course of the solvolysis, and provision for rapid temperatur e changes and control. A series of experiments exploring the direct tr ansition from HF solvolysis to acetolysis conditions by the addition o f acetic acid and acetic anhydride, as an alternative to previously pu blished solvolysis termination schemes, is also described.