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Glycerophospholipids are derived from glycerol-3-phosphate in a de novo pathway. [3] The term glycerophospholipid signifies any derivative of glycerophosphoric acid that contains at least one O-acyl, or O-alkyl, or O-alk-1'-enyl residue attached to the glycerol moiety. [4] The phosphate group forms an ester linkage to the glycerol.
These include sphingosine-1-phosphate, a sphingolipid derived from ceramide that is a potent messenger molecule involved in regulating calcium mobilization, [71] cell growth, and apoptosis; [72] diacylglycerol and the phosphatidylinositol phosphates (PIPs), involved in calcium-mediated activation of protein kinase C; [73] the prostaglandins ...
A triglyceride (from tri-and glyceride; also TG, triacylglycerol, TAG, or triacylglyceride) is an ester derived from glycerol and three fatty acids. [1] Triglycerides are the main constituents of body fat in humans and other vertebrates as well as vegetable fat . [ 2 ]
Glycerophospholipids: Neural tissue (including the brain) contains high amounts of glycerophospholipids. [25] Other types of lipids: Cholesterols: Cholesterols are the main precursors for different hormones in our body such as progesterone and testosterone. The main function of cholesterol is controlling the cell membrane fluidity. [26]
Triglycerides are formed from the esterification of 3 molecules of fatty acids with one molecule of trihydric alcohol, glycerol (glycerine or trihydroxy propane). In the process, 3 molecules of water are eliminated. The word "triglyceride" refers to the number of fatty acids esterified to one molecule of glycerol.
Thus, the two substrates of this enzyme are phospholipid and 1,2-diacylglycerol, whereas its two products are lysophospholipid and triacylglycerol. This enzyme belongs to the family of transferases , specifically those acyltransferases transferring groups other than aminoacyl groups.
Glycerol 1-phosphate, sometimes called as D-glycerol 3-phosphate, is the enantiomer of glycerol 3-phosphate. Eukaryotes use the 3-phosphate, or L-configuration, for glycerolipid backbone. The 1-phosphate is specifically found in archeal lipids. [5]
Diacylglycerol is a precursor to triacylglycerol (triglyceride), which is formed in the addition of a third fatty acid to the diacylglycerol under the catalysis of diglyceride acyltransferase. Since diacylglycerol is synthesized via phosphatidic acid, it will usually contain a saturated fatty acid at the C-1 position on the glycerol moiety and ...