Figure 1.

The Structure of LPS. LPS is made up of three parts: Lipid A, core, and the O-polysaccharide chain. Covalently attached to lipid A is the core part of the molecule, divided into the inner and outer core. The inner core is next to the lipid A section, which contains sugars such as L-glycerol-D-manno heptose (Hep) and 3-deoxy-D-manno-octulosonic acid (Kdo). The outer core contains common sugars such as hexosamines and hexoses (Hex). Attached to the outer core are repeating subunits of oligosaccharides, referred to as the O-chain (3). Adapted from Erridge et al. (3).