Figure 2.

Hydrogen-bond donation from PE headgroups enhances negative curvature in lipid dimers. Legend above figure (in gray) shows the crosshatched bars that represent the non-hydrogen-bonded complexes, the colored bars represent the hydrogen-bonded dimers, and the gray bar represents the theoretical, additive model. Experienced curvature is plotted for lipids as monomers or as in complex. Lipids (DOPE, green; DOPC, blue; DOPS, gold) are colored by type. The additive model is shown in gray. The bottom panels are representative molecular configurations of hydrogen-bonded dimers. To see this figure in color, go online. Error bars represent one SEM.