| Description | PC(20:4(8Z,11Z,14Z,17Z)/22:4(7Z,10Z,13Z,16Z)) belongs to the class of organic compounds known as phosphatidylcholines. These are glycerophosphocholines in which the two free -OH are attached to one fatty acid each through an ester linkage. In one route, choline is activated first by phosphorylation and then by coupling to CDP prior to attachment to phosphatidic acid. Phospholipids, are ubiquitous in nature and are key components of the lipid bilayer of cells, as well as being involved in metabolism and signaling. Fatty acids containing 16, 18 and 20 carbons are the most common. While most phospholipids have a saturated fatty acid on C-1 and an unsaturated fatty acid on C-2 of the glycerol backbone, the fatty acid distribution at the C-1 and C-2 positions of glycerol within phospholipids is continually in flux, owing to phospholipid degradation and the continuous phospholipid remodeling that occurs while these molecules are in membranes. PC(20:4(8Z,11Z,14Z,17Z)/22:4(7Z,10Z,13Z,16Z)) is an extremely weak basic (essentially neutral) compound (based on its pKa). Within humans, PC(20:4(8Z,11Z,14Z,17Z)/22:4(7Z,10Z,13Z,16Z)) participates in a number of enzymatic reactions. In particular, S-adenosylhomocysteine and PC(20:4(8Z,11Z,14Z,17Z)/22:4(7Z,10Z,13Z,16Z)) can be biosynthesized from S-adenosylmethionine and pe-nme2(20:4(8Z,11Z,14Z,17Z)/22:4(7Z,10Z,13Z,16Z)); which is catalyzed by the enzyme phosphatidylethanolamine N-methyltransferase. In addition, cytidine monophosphate and PC(20:4(8Z,11Z,14Z,17Z)/22:4(7Z,10Z,13Z,16Z)) can be biosynthesized from CDP-choline and DG(20:4(8Z,11Z,14Z,17Z)/22:4(7Z,10Z,13Z,16Z)/0:0) Through the action of the enzyme choline/ethanolaminephosphotransferase. In humans, PC(20:4(8Z,11Z,14Z,17Z)/22:4(7Z,10Z,13Z,16Z)) is involved in phosphatidylcholine biosynthesis. A third route to PC synthesis involves the conversion of either PS or PE to PC. It is a glycerophospholipid in which a phosphorylcholine moiety occupies a glycerol substitution site. PCs can also synthesized by the addition of choline to CDP-activated 1,2-diacylglycerol. The eicsoatetraenoic acid moiety is derived from fish oils, while the adrenic acid moiety is derived from animal fats. As is the case with diacylglycerols, glycerophosphocholines can have many different combinations of fatty acids of varying lengths and saturation attached at the C-1 and C-2 positions. PCs can be synthesized via three different routes. |
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| Structure | [H][C@@](O)(COCCCCCCCCCCCCCCCCCC)COP(O)(O)=O InChI=1S/C21H45O6P/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-26-19-21(22)20-27-28(23,24)25/h21-22H,2-20H2,1H3,(H2,23,24,25)/t21-/m1/s1 |
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| InChI Identifier | InChI=1S/C21H45O6P/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-26-19-21(22)20-27-28(23,24)25/h21-22H,2-20H2,1H3,(H2,23,24,25)/t21-/m1/s1 |
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