Apolipoprotein E serves as a ligand for low density receptors and participates in the transport and redistribution of cholesterol and other lipids. Other functions include immunoregulation and cell growth modulation and differentiation. Apo E is thought to be involved in tissue repair as increased amounts of the protein are found at sites of peripheral nerve injury and regeneration. A mutant form is associated with familial type III hyperlipoproteinemia. Description: Human plasma. Alternative Names: VLDL protein, APO E protein, Apolipoprotein E protein, Apo-E protein, Very Low Density Lipoprotein protein