these units were as follows : a ) protein-lipid structure of surface monolayer of high density lipoprotein particles , which enables to intercalate the molecules of unesterified cholesterol , b ) the enzymatic system , responsible for cholesterol esterification ( lecithin-cholesterol acyltransferase -- lcat ) , involving the enzyme second substrate lecithin and activator apoprotein a-1 , c ) the system of nonenzymatic controlled transport of cholesterol esters , developed during the lcat-reaction , involving the lipid-transport protein .
C0025252
protein
C0033684
protein