====== LDL ======


A [[lipoprotein]] is a biochemical assembly that contains both [[protein]]s and [[lipid]]s, bound to the proteins, which allow fats to move through the water inside and outside cells. The proteins serve to emulsify the lipid molecules. Many [[enzyme]]s, [[transporter]]s, structural proteins, [[antigen]]s, [[adhesin]]s, and [[toxin]]s are lipoproteins. Examples include the plasma lipoprotein particles classified under high-density ([[HDL]]) and low-density ([[LDL]]) lipoproteins, which enable fats to be carried in the bloodstream, the [[transmembrane protein]]s of the mitochondrion and the chloroplast, and bacterial lipoproteins.