Record Information
Version1.0
StatusDetected and Quantified
Creation Date2022-07-07 22:10:12 UTC
Update Date2023-12-14 16:53:56 UTC
Metabolite IDMMDBc0056980
Metabolite Identification
Common NamePG(12:0/16:0)
DescriptionPG(12:0/16:0) is a phosphatidylglycerol or glycerophospholipid (PG or GP). It is a glycerophospholipid in which a phosphoglycerol moiety occupies a glycerol substitution site. As is the case with diacylglycerols, phosphatidylglycerols can have many different combinations of fatty acids of varying lengths and saturation attached at the C-1 and C-2 positions. Fatty acids containing 16, 18 and 20 carbons are the most common. PG(12:0/16:0), in particular, consists of one dodecanoyl chain at the C-1 position and one hexadecanoyl chain at the C-2 position. Phosphatidylglycerol is formed from phosphatidic acid by a sequence of enzymatic reactions that proceeds via the intermediate, cytidine diphosphate diacylglycerol (CDP-diacylglycerol). Bioynthesis proceeds by condensation of phosphatidic acid and cytidine triphosphate with elimination of pyrophosphate via the action of phosphatidate cytidyltransferase (or CDP-synthase). CDP-diacylglycerol then reacts with glycerol-3-phosphate via phosphatidylglycerophosphate synthase to form 3-sn-phosphatidyl-1'-sn-glycerol 3'-phosphoric acid, with the release of cytidine monophosphate (CMP). Finally, phosphatidylglycerol is formed by the action of specific phosphatases. 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. PG also serves as a precursor for the synthesis of cardiolipin. PG is synthesized from CDP-diacylglycerol and glycerol-3-phosphate.
Structure
SynonymsNot Available
Molecular FormulaC34H67O10P
Average Mass666.874
Monoisotopic Mass666.447185355
IUPAC Name[(2S)-2,3-dihydroxypropoxy][(2R)-3-(dodecanoyloxy)-2-(hexadecanoyloxy)propoxy]phosphinic acid
Traditional Name(2S)-2,3-dihydroxypropoxy((2R)-3-(dodecanoyloxy)-2-(hexadecanoyloxy)propoxy)phosphinic acid
CAS Registry NumberNot Available
SMILES
[H][C@](O)(CO)COP(O)(=O)OC[C@@]([H])(COC(=O)CCCCCCCCCCC)OC(=O)CCCCCCCCCCCCCCC
InChI Identifier
InChI=1S/C34H67O10P/c1-3-5-7-9-11-13-14-15-16-18-20-22-24-26-34(38)44-32(30-43-45(39,40)42-28-31(36)27-35)29-41-33(37)25-23-21-19-17-12-10-8-6-4-2/h31-32,35-36H,3-30H2,1-2H3,(H,39,40)/t31-,32+/m0/s1
InChI KeyJJJHMQOYSWPKDB-AJQTZOPKSA-N