PG(18:0/0:0) is a phosphatidylglycerol. It is a glycerophospholipid in which a phosphorylserine moiety occupies a glycerol substitution site. As is the case with diacylglycerols, phosphatidylserines can have many different combinations of fatty acids of varying lengths and saturation attached at the C-1 and C-2 positions. PG(18:0/0:0), in particular, consists of two octadecanoyl chains at positions C-1 and C-2. In E. coli glycerophospholipid metabolism, phosphatidylglycerol is formed from phosphatidic acid (1,2-diacyl-sn-glycerol 3-phosphate) by a sequence of enzymatic reactions that proceeds via two intermediates, cytidine diphosphate diacylglycerol (CDP-diacylglycerol) and phosphatidylglycerophosphate (PGP, a phosphorylated phosphatidylglycerol). Phosphatidylglycerols, along with CDP-diacylglycerol, also serve as precursor molecules for the synthesis of cardiolipin, a phospholipid found in membranes. Mrv1652305052017402D 34 33 0 0 0 0 999 V2000 4.7073 6.0177 0.0000 O 0 0 0 0 0 0 0 0 0 0 0 0 5.4217 6.4302 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 6.1362 6.0177 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 6.1362 5.1927 0.0000 O 0 0 0 0 0 0 0 0 0 0 0 0 6.8507 6.4302 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 7.5651 6.0177 0.0000 O 0 0 0 0 0 0 0 0 0 0 0 0 8.2796 6.4302 0.0000 P 0 0 0 0 0 0 0 0 0 0 0 0 8.6921 5.7158 0.0000 O 0 0 0 0 0 0 0 0 0 0 0 0 7.8671 7.1447 0.0000 O 0 0 0 0 0 0 0 0 0 0 0 0 8.9941 6.8427 0.0000 O 0 0 0 0 0 0 0 0 0 0 0 0 9.7086 6.4302 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 10.4230 6.8427 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 11.1375 6.4302 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 11.8520 6.8427 0.0000 O 0 0 0 0 0 0 0 0 0 0 0 0 12.5664 6.4302 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 12.5664 5.6052 0.0000 O 0 0 0 0 0 0 0 0 0 0 0 0 13.2809 6.8427 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 13.9954 6.4302 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 14.7099 6.8427 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 15.4243 6.4302 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 16.1388 6.8427 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 16.8533 6.4302 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 17.5677 6.8427 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 18.2822 6.4302 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 18.9967 6.8427 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 19.7112 6.4302 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 20.4256 6.8427 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 21.1401 6.4302 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 21.8546 6.8427 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 22.5690 6.4302 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 23.2835 6.8427 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 23.9980 6.4302 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 24.7124 6.8427 0.0000 C 0 0 0 0 0 0 0 0 0 0 0 0 10.4230 7.6677 0.0000 O 0 0 0 0 0 0 0 0 0 0 0 0 1 2 1 0 0 0 0 2 3 1 0 0 0 0 3 4 1 0 0 0 0 3 5 1 0 0 0 0 5 6 1 0 0 0 0 6 7 1 0 0 0 0 7 8 1 0 0 0 0 7 9 2 0 0 0 0 7 10 1 0 0 0 0 10 11 1 0 0 0 0 11 12 1 0 0 0 0 12 13 1 0 0 0 0 13 14 1 0 0 0 0 14 15 1 0 0 0 0 15 16 2 0 0 0 0 15 17 1 0 0 0 0 17 18 1 0 0 0 0 18 19 1 0 0 0 0 19 20 1 0 0 0 0 20 21 1 0 0 0 0 21 22 1 0 0 0 0 22 23 1 0 0 0 0 23 24 1 0 0 0 0 24 25 1 0 0 0 0 25 26 1 0 0 0 0 26 27 1 0 0 0 0 27 28 1 0 0 0 0 28 29 1 0 0 0 0 29 30 1 0 0 0 0 30 31 1 0 0 0 0 31 32 1 0 0 0 0 32 33 1 0 0 0 0 12 34 1 0 0 0 0 M END