A class of lipoproteins of small size (18-25 nm) and low density (1.019-1.063 g/ml) particles with a core composed mainly of cholesterol esters and smaller amounts of triglycerides. The surface monolayer consists mostly of phospholipids, a single copy of apolipoprotein B-100, and free cholesterol molecules. The main function of LDL is to transport cholesterol and cholesterol esters from the liver. Excessive levels are associated with cardiovascular disease.
This entity has been manually annotated by the ChEBI Team.