Figure 5.
Lipid-packing defects in biological membranes. (A) A plot of packing defect size constants (deep in blue, shallow in green) in membranes of complex compositions (PM, plasma membrane; TGN, trans-Golgi network; ER, endoplasmic reticulum). (B) The top view of a PM patch is shown with the coordinates of every elementary packing defect. Blue, deep; green, shallow. (C) The same as in (B) is shown for a TGN membrane patch. The aliphatic atoms are colored in yellow, and all other lipid atoms are in gray.