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| record types: factsheet, level, food science, omega3 fatty acid , suzanne munson, nutrition facts, anti inflammatory herb, ayurveda, infertility, essentialfatty acids / phospholipids, plump butt , enderlein, salmon, george mateljan, plump jack squaw valley , canola oil, | The dha lecithin dipalmitoyllecithin is a component of lung or pulmonary surfactant. It contains palmitate at both carbon 1 and 2 of glycerol and is the major (80%) phospholipid found in the extracellular lipid layer lining the pulmonary alveoli. Choline is activated first by phosphorylation and then by coupling to CDP prior to attachment to phosphatidic acid. PC is dha also synthesized by the addition of choline to CDP-activated 1,2-diacylglycerol. A third pathway to PC synthesis, involves the conversion of either PS or PE to PC. The conversion of PS to PC first requires decarboxylation dha of PS to yield PE; this then undergoes a series of three methylation reactions utilizing S-adenosylmethionine (SAM) as methyl group donor. PE:These molecules are neutral zwitterions at physiological pH. They contain primarily palmitic or stearic acid on carbon 1 and a long chain unsaturated fatty acid (e.g. |
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| Most phospholipids have a saturated fatty acid on C-1 and an unsaturated fatty acid on C-2 of the glycerol record types: factsheet backbone. The most commonly added alcohols (serine, ethanolamine and choline) also contain nitrogen that may be record types: factsheet positively charged, whereas, glycerol and inositol do not. The major classifications of phospholipids are: Phosphatidylcholine (PC) Phosphatidylethanolamine (PE) Phosphatidylserine (PS) Phosphatidylinositol (PI) Phosphatidylglycerol (PG) Diphosphatidylglycerol (DPG) back to the top Phospholipid Synthesis Phospholipids can be record types: factsheet synthesized by two mechanisms. One utilizes a CDP-activated polar head group for attachment to the phosphate of phosphatidic acid. The other utilizes CDP-activated 1,2-diacylglycerol and an inactivated polar head group. PC:This class of phospholipids is also called the lecithins. At physiological pH, phosphatidylcholines are neutral zwitterions. They contain primarily palmitic or stearic acid at carbon 1 and primarily oleic, linoleic or linolenic acid at carbon 2. |
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