Cholesterol exchange as a function of cholesterol/phospholipid mole ratios.
The activation energy (Ea) for cholesterol exchange between dioleoyl phosphatidylcholine vesicles and erythrocyte 'ghosts' is measured as a function of molar percentage of cholesterol in both donor and acceptor membranes. A sharp increase in Ea occurs (from 39.9kJ/mol to 84kJ/mol) when the molar percentage of cholesterol decreases from 30 to 20%.
D002784:Cholesterol / Q000378:metabolism*; D004910:Erythrocyte Membrane / Q000378:metabolism; D006801:Humans; D007700:Kinetics; D010713:Phosphatidylcholines / Q000378:metabolism*; D013816:Thermodynamics
D010713:Phosphatidylcholines; D002784:Cholesterol