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Chylomicron structure ApoA, ApoB, ApoC, ApoE (apolipoproteins); T (triacylglycerol); C (cholesterol); green (phospholipids). Chylomicrons transport lipids absorbed from the intestine to adipose, cardiac, and skeletal muscle tissue, where their triglyceride components are hydrolyzed by the activity of the lipoprotein lipase, allowing the released free fatty acids to be absorbed by the tissues.
Chylomicron retention disease is a disorder of fat absorption. [1] It is associated with SAR1B. [2] Mutations in SAR1B prevent the release of chylomicrons in the circulation which leads to nutritional and developmental problems. [3] It is a rare autosomal recessive disorder with around 40 cases reported worldwide. Since the disease allele is ...
Structure of a chylomicron (the largest lipoprotein). ApoA , ApoB , ApoC , ApoE are apolipoproteins ; green particles are phospholipids ; T is triglyceride ; C is cholesterol ester . A lipoprotein is a biochemical assembly whose primary function is to transport hydrophobic lipid (also known as fat ) molecules in water, as in blood plasma or ...
Remnant cholesterol is the cholesterol content of triglyceride-rich lipoproteins, which consist of very low-density lipoproteins and intermediate-density lipoproteins with chylomicron remnants. [2] [5] Remnant cholesterol is primarily chylomicron and VLDL, and each remnant particle contains about 40 times more cholesterol than LDL. [6]
344 11813 Ensembl ENSG00000234906 ENSMUSG00000002992 UniProt P02655 Q05020 RefSeq (mRNA) NM_000483 NM_001277944 NM_001309795 RefSeq (protein) NP_000474 NP_000474.2 NP_001296728 NP_001264873 NP_001296724 Location (UCSC) Chr 19: 44.95 – 44.95 Mb Chr 7: 19.41 – 19.41 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Protein family Apo-CII nmr structure of human apolipoprotein c-ii in ...
Apolipoprotein E (apoE) plays an important role in the transport and uptake of cholesterol by way of its high affinity interaction with lipoprotein receptors, including the low-density lipoprotein (LDL) receptor. ApoE is the major lipoprotein in the central nervous system.
Apolipoprotein C-III also known as apo-CIII, and apolipoprotein C3, is a protein that in humans is encoded by the APOC3 gene.Apo-CIII is secreted by the liver as well as the small intestine, and is found on triglyceride-rich lipoproteins such as chylomicrons, very low density lipoprotein (VLDL), and remnant cholesterol.
The size of circulating chylomicrons is gradually reduced to chylomicron remnants by lipoprotein lipase on endothelial cells of systemic capillaries. When the chylomicron remnants become small enough (30–80 nm), they pass through the LSEC fenestrations, leading to their metabolism in hepatocytes.