(Adapted from [4]) The enzymes LpxA, LpxC, and LpxD are located in the cytoplasm, whereas LpxH, LpxB, LpxK, WaaA, LpxL and LpxM are anchored to the inner membrane. Substrates for the biosynthetic are highlighted in green: acyl carrier protein (ACP)-bound acyl donors, UDP-N-acetylglucosamine (UDP-GlcNAc), ATP, and CMP-3-deoxy-D-manno-octulosonic acid (CMP-Kdo). The product of the pathway is further modified into variable lipopolysaccharide structures via further glycosylation of the Kdo sugars (not explicitly shown).