: MeSH: High-Density Lipoproteins, Pre-beta

Amino Acids, Peptides, and Proteins > Proteins > Lipoproteins > Lipoproteins, HDL > High-Density Lipoproteins, Pre-beta

Lipids > Lipoproteins > Lipoproteins, HDL > High-Density Lipoproteins, Pre-beta

High-Density Lipoproteins, Pre-beta

A highly dense subclass of the high-density lipoproteins, with particle sizes below 7 nm. They are also known as nascent HDL, composed of a few APOLIPOPROTEIN A-I molecules which are complexed with PHOSPHOLIPIDS. The lipid-poor pre-beta-HDL particles serve as progenitors of HDL3 and then HDL2 after absorption of free cholesterol from cell membranes, cholesterol esterification, and acquisition of apolipoproteins A-II, Cs, and E. Pre-beta-HDL initiate the reverse cholesterol transport process from cells to liver.

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