[Interaction of cholesterol with apoprotein E - an arginine-rich protein of very low density lipoproteins].

Apoprotein E was isolated from delipidated lipoproteins of very low density obtained from blood plasma of rabbits with experimental hypercholesterinemia. The protein, whose molecular weight is 45000, produces a single hand during polyacrylamide gel electrophoresis and contains 10% of arginine. The formation of an apoprotein E -- cholesterol complex and participation of guanidine groups of guanidine groups of arginine residues of apoprotein E in cholesterol binding have been postulated.