the 47,000 mr protein enhancement ca2+ aggregation of phosphatidylserine liposomes containing up to 40 % phosphatidylcholine , liposomes made from lipids extracted from chromaffin granule membranes , and trypsin-treated chromaffin granule membranes , thus suggesting that synexin activity in vivo may be independent of specific membrane proteins but dependent on the presence of acidic phospholipids in the membrane .
C0033684
protein
C0025252
membrane proteins