1. A protein component of a lipoprotein particle that plays a key role in the transport and metabolism of lipids in the blood.
Usage: technical; medical/biochemistry; often abbreviated as apo or apoprotein

Examples

• Apolipoprotein B is essential for the formation of low-density lipoprotein particles.
• The doctor ordered a test to measure apolipoprotein levels as part of the cardiovascular risk assessment.
• Apolipoprotein A-I is the major protein component of high-density lipoprotein, which helps remove cholesterol from arteries.
• Mutations in the apolipoprotein E gene are associated with increased risk of Alzheimer's disease.
• Different apolipoproteins serve distinct functions in lipid transport and metabolism throughout the body.