CURVATURE-MEDIATED INTERACTIONS BETWEEN MEMBRANE-PROTEINS

Membrane proteins can deform the lipid bilayer in which they are embed ded. If the bilayer is treated as an elastic medium, then these deform ations will generate elastic interactions between the proteins. The in teraction between a single pair is repulsive. However, for three or mo re proteins, we show that there are nonpainwise forces whose magnitude is similar to the pairwise forces. When there are five or more protei ns, we show that the nonpairwise forces permit the existence of stable protein aggregates, despite their pairwise repulsions.