Table 1. Lipid composition of liposomes.

Liposomes	Chol	PC	PE	SM	PS	PG
Bacterial (E. coli) inner membrane (BcM-like)	0	0	80	0	0	20
Mammalian plasma membrane (PM-like)	50	20	11	13	6	0
Mammalian nuclear membrane (NuM-like)	15	51	20	9	5	0
NuM-like-noPE	19	64	0	11	6	0
NuM-like+Chol	50	31	12	5	3	0
PC	0	100	0	0	0	0
Chol+PC	40	60	0	0	0	0
Chol+PC+PE	40	40	20	0	0	0
Chol+PC+SM	40	45	0	15	0	0
Chol+PC+PE+SM	40	25	20	15	0	0

The lipid compositional data are expressed as a molar percentage of the total lipid. PC, phosphatidylcholine; PE, phosphatidylethanolamine; SM, sphingomyelin; PS, phosphatidylserine; PG, phosphatidylglycerol; Chol, cholesterol.