the form under which lipids travel within the circulatory system, bounded to specific transport proteins.
A compound containing a relatively small lipid bound to a protein.
a compound that contains both lipid and protein. Plasma lipoproteins are used to transport fats throughout the body.
a protein containing lipid; some made in the liver bind cholesterol & triglycerides to raise their solubility in blood; high levels of LDL's (low-density) are risk factors for atherosclerosis & high levels of HDL's (high-density) are protective against it
As the name suggests, lipoproteins are a compound of fat and protein. Their main job is to carry cholesterol through the bloodstream. There are two kinds of lipoproteins: LDL and HDL. LDL's ("bad" cholesterol) are lipoproteins that have more fat than protein. HDL's ("good" cholesterol) are lipoproteins that have more protein than fat.
(lih'-po-PRO-teen) A protein-lipid complex produced by the liver that transports cholesterol and triglycerides through the bloodstream. Low density lipoproteins (LDLs) are associated with an increased risk of atherosclerosis, whereas high density lipoproteins (HDLs) are associated with a reduced risk.
any of a large class of conjugated proteins composed of a complex of protein and lipid —see HDL, LDL, VLDL
A family of lipoprotein particles varying in density and size depending on the protein-lipid ratio and the protein composition. These particles consist of apolipoprotein B-100 covalently linked to apolipoprotein-a by one or two disulfide bonds. There is a correlation between high plasma levels of this lipoprotein and increased risk for atherosclerotic cardiovascular disease.
A complex molecule that consists of a protein membrane surrounding a core of lipids. Lipoproteins carry cholesterol and other lipids from the digestive tract to the liver and other body tissues. There are five major types of lipoproteins.
any complex of fat and protein.
Combination of a lipid and protein. Cholesterol is transported in the blood plasma by lipoproteins. See high-density lipoprotein, lowdensity lipoprotein.
A conjugated protein that is a complex of protein and lipid.
A protein conjugated to lipids.
a conjugated protein having a lipid component; the principal means for transporting lipids in the blood
a biochemical assembly that contains both protein s and lipid s and may be structural or catalytic in function
a combination of a lipid - a fatty substance in the blood - and an apoprotein
a combination of both fat and protein
a combination of cholesterol and protein
a particle composed of protein and lipids that transports the lipids in the bloodstream and lymph system
a particle consisting of a core of hydrophobic lipids surrounded by a shell of polar lipids and apoproteins
a particle in our bloodstream that is made
A special blood protein that is designed to carry fat and cholesterol. Common lipoproteins are HDL (high density lipoprotein), LDL (low-density lipoprotein), VLDL (very low density lipoprotein), and chylomicrons.
A nonfibrinolytic plasminogen analog that is attached to low-density lipoprotein (LDL) apoprotein B and plasminogen binding sites, inhibiting fibrinolysis and enhancing LDL trapping in the arterial wall.
A lipid combined with a protein molecule.
Protein-coated packages that carry fat and cholesterol throughout the bloodstream. There are four general classes: high-density, low-density, very low-density, and chylomicrons.
Lipid surrounded by a protein. In this form, cholesterol and other fats can be carried through the bloodstream to and from cells. Lipoproteins, such as HDL and LDL, differ from one another in their content of protein, triglycerides, and cholesterol.
A conjugated protein that transports cholesterol and fats in the blood.
Organic compound comprised of protein and fatty substances called lipids, which include fatty acids and cholesterol. Lipoproteins are responsible for cholesterol transport throughout the body.
A combination of fat and protein that transports fats in the blood.
a compound composed of protein and fats.
Protein that carries cholesterol in the blood.
a diverse class of particles containing varying amounts of triglycerides, cholesterol, phospholipids, and protein that solubilize lipids for blood transport.
Vehicle that transports fat throughout the body; made up of protein, fat and cholesterol.
Lipoproteins are formed by the attachment of a protein to triglyceride (replacing one of the fatty acids) or a direct connection of a free fatty acid to a protein. The type of lipoproteins found in chylomicrons, VLDL, HDL and LDL determine their different functions in transporting fats and cholesterol throughout the body. Lipoproteins also are important structural components of the bi-lipid membrane, enzymes, proton pumps, and ion pumps.
lipoprotein composed of LDL cholesterol and apolipoprotein A thought to reduce vascular fibrinolytic capacity and thromboresistance, and be a marker of accelerated atherosclerosis
a chemical compound made of fat and PROTEIN. Lipoproteins are found in the blood, where they carry CHOLESTEROL.
A complex of lipid and protein, the way lipids travel in the blood. See the entire definition of Lipoprotein
Fat carrying protein in the blood.
A variation of LDL, the “bad” blood cholesterol. Lipoprotein has been associated with increased risk of stroke and cardiovascular disease.
a component of the blood that serves to carry cholesterol throughout the body. It is composed of a fat molecule attached to a protein molecule. It appears in various forms, such as LDL and HDL.
small globules of cholesterol covered by a layer of protein; produced by the liver.
lipid-protein complex within the plasma membrane of cells.
transporters of fatty substances in the blood.
is a protein shell that transports lipids through the blood.
Any of the class of proteins that contain a lipid combined with a simple protein.
a fatty protein. Lipoproteins transport lipids (specifically fats and cholesterol) through the bloodstream.
A lipid surrounded by a protein; the protein makes the lipid soluble in blood.
Any of the lipid-protein complexes in which lipids are transported in the blood.
(lip-o-PRO-teen) Compounds of protein that carry fats and fat-like substances, such as cholesterol, in the blood.
Any of a group of proteins combined with a lipid that allow lipids to be transported in the circulatory system.
A type of lipid that is similar in structure to LDL (see Cardiovascular Health).
A combination of fat (lipid) molecules and protein molecules bound together as packages that enable other fats and cholesterol to move easily through the blood. See low-density lipoprotein and high-density lipoprotein (see Cardiovascular Health, High Cholesterol).
The combination of protein, fat, and cholesterol found in the blood. Depending on their size and weight, lipoproteins are classified as low-density lipoproteins (LDLs) or high-density lipoproteins (HDLs). LDLs transport cholesterol to body tissue, which can damage arteries. A high level of LDL cholesterol is a major risk factor for cardiovascular disease. HDLs bring cholesterol back to the liver where it is broken down and eliminated from the body. HDL cholesterol differs from LDL cholesterol in that it is not a risk factor for cardiovascular disease. In fact, a high level of HDL cholesterol actually helps reverse your risk for cardiovascular disease. An extensive body of research demonstrates that consuming 25 grams of soy protein per day can lower LDL cholesterol and reduce the risk of heart disease.
A lipoprotein is a biochemical assembly that contains both proteins and lipids. The lipids or their derivatives may be covalently or non-covalently bound to the proteins. Many enzymes, transporters, structural proteins, antigens, adhesins and toxins are lipoproteins.