When the proportion of DPPG/DPPC is 2:1 or 1: 1,the phospholipid molecules into the opposite lipid layer with the ends of the acyl chains near to the 8th carbons of the opposing lipid molecules .

• 当DPPG／DPPC摩尔比为1：2时，就不能发生交插而呈完全的非交插状态。