Stable Biomembrane Surfaces Formed by Phospholipid Polymers
Many studies have now been made of the structure and dynamics of biomembranes and it is generally accepted that a lipid bilayer provides a matrix in or upon which proteins and glycoproteins are locatedl. It is significant that within some cell membranes the lipids are asymmetrically distributed. All the phosphatidylserine and phosphatidylethanolamine of blood plasma erythrocyte2 and platelet cells3 lie in the inner lamella of the bilayer and all the phosphatidylcholine and sphingomyelin in the outer layer2,3. It has been suggested that this asymmetric phospholipid distribution may serve a biological purpose by helping to maintain the delicate balance between haemostasis and thrombosis. Recent results indicate that the outer surface of blood cells is devoid of phospholipids which are active in blood coagulation processes4.
KeywordsContact Angle Acyl Chain Hydrophilic Surface Arachidic Acid Phospholipid Molecule
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