Figure 4.

(a) Structures of the lipids used. The lipids have identical saturated 16-carbon acyl chains but differ in their head group architecture and charge; (b) Schematic of a Langmuir trough containing a lipid monolayer. The movable barrier controls the lipid density of the film and the Wilhelmy plate measures the surface pressure. Aβ40 solution (250 nM) was injected into the aqueous subphase of the trough using an l-shaped syringe underneath the barrier [84]. (a,b) Adapted with permission. Copyright 2008, WILEY-LISS.