The chyle from intestine is rich with chylomicrons. Which of the following form the protein core of chylomicrons?
Correct Answer: Triglyceride + cholesterol + phospholipid
Description: The triacylglycerol, cholesterol ester and phospholipid molecules along with apoproteins B48, and apo-A are incorporated into chylomicrons. Four major groups of lipoproteins: Chylomicrons, derived from intestinal absorption of triacylglycerol and other lipids. Very low density lipoproteins (VLDL, or pre--lipoproteins), derived from the liver for the expo of triacylglycerol. Low-density lipoproteins (LDL, or -lipoproteins), representing a final stage in the catabolism of VLDL. High-density lipoproteins (HDL, or -lipoproteins), involved in cholesterol transpo and also in VLDL and chylomicron metabolism. Triacylglycerol is the predominant lipid in chylomicrons and VLDL, whereas cholesterol and phospholipid are the predominant lipids in LDL and HDL, respectively. Ref: Botham K.M., Mayes P.A. (2011). Chapter 25. Lipid Transpo & Storage. In D.A. Bender, K.M. Botham, P.A. Weil, P.J. Kennelly, R.K. Murray, V.W. Rodwell (Eds), Harper's Illustrated Biochemistry, 29e.
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