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. Author manuscript; available in PMC: 2014 Aug 30.
Published in final edited form as: Carbohydr Res. 2013 Jul 2;378:79–83. doi: 10.1016/j.carres.2013.06.015

Figure 1. Structure of Francisella LPS.

Figure 1

Major Francisella lipid A molecule with core oligosaccharide (A). The length of each fatty acyl chain is indicated in parenthesis. Chain length variation (16/18) indicates temperature regulation. Less abundant lipid A variants may have various modifications in sugar composition as shown in dashed circles (B). The structures of F. tularensis O-antigen (C), and F. novicida O-antigen (D) are shown. For comparison, E. coli Kdo2-lipid A is also shown (E). R = O-antigen.