Plot of which DMPC atoms are in close proximity to each dendrimer at the equilibrium dendrimer–lipid separation distance. The atoms in each DMPC molecule have been assigned a number, according to (A), and plotted on the horizontal axis of (B) and (C). Identical DMPC atoms have been assigned the same number, and the results have been normalized appropriately. The vertical axis of (B) represents the average number of DMPC atoms of each type that are within 2, 3, 4, 5, or 6 Å of the dendrimer at the equilibrium interaction coordinate. (C) shows the difference between the charged and uncharged dendrimers.