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Lipoprotein Classes

Lipid transporters in the body

Lipoprotein Classes

Lipid protein transport system

Lipoprotein Classes

What are lipoproteins?

Because lipids are insoluble in an aqueous solution, they need a transport system enabling them to be carried in the blood stream which is essentially an aqueous solution. This is achieved through apoproteins which have hydrophobic and hydrophilic surfaces. This enables the apoprotein to bind to phospholipids by hydrophobic forces to form spherical transport vehicles the core of which are filled with triglycerides [triacylglycerols] and cholesterol esters.

Lipoproteins share the same structure but differ in size, density, core lipid composition and the type of apoproteins present.
There are 5 major density classes of lipoproteins arranged in size from the largest being the chylomicron to the smallest being HDL.

This tutorial discusses facts about these important lipid transporters and the impact they have on cardiovascular health.

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