Record Information
Creation date2011-09-21 01:57:44 UTC
Update date2020-04-06 23:42:07 UTC
Primary IDFDB029569
Secondary Accession NumbersNot Available
Chemical Information
FooDB NamePGP(18:3(6Z,9Z,12Z)/18:3(9Z,12Z,15Z))
DescriptionPGP(18:3(6Z,9Z,12Z)/18:3(9Z,12Z,15Z)) is a phosphatidylglycerolphosphate or glycerophospholipid (PGP or GP). It is a glycerophospholipid in which a phosphoglycerol moiety occupies a glycerol substitution site followed by another phosphate moiety. 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. PGP(18:3(6Z,9Z,12Z)/18:3(9Z,12Z,15Z)), in particular, consists of one chain of g-linolenic acid at the C-1 position and one chain of a-linolenic acid at the C-2 position. The g-linolenic acid moiety is derived from animal fats, while the a-linolenic acid moiety is derived from seed oils, especially canola and soybean oil. Phosphatidylglycerolphosphate is present at a level of 1-2% in most animal tissues, but it can be the second most abundant phospholipid in lung surfactant at up to 11% of the total. It is well established that the concentration of Phosphatidylglycerolphosphate increases during fetal development. Phosphatidylglycerolphosphate may be present in animal tissues merely as a precursor for diphosphatidylglycerol (cardiolipin). 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. PGPs have a net charge of -1 at physiological pH and are found in high concentration in mitochondrial membranes and as components of pulmonary surfactant. PGP also serves as a precursor for the synthesis of cardiolipin. PGP is synthesized from CDP-diacylglycerol and glycerol-3-phosphate. [HMDB]
CAS NumberNot Available
3-sn-phosphatidyl-1'-sn-glycerol 3'-phosphoric acidLipid Annotator, HMDB
PGP(36:6)Lipid Annotator, HMDB
PGP(18:3/18:3)Lipid Annotator, HMDB
1-g-linolenoyl-2-a-linolenoyl-sn-glycero-3-phospho-(1'-sn-glycerol-3'-phosphate)Lipid Annotator, HMDB
1-(6Z,9Z,12Z-octadecatrienoyl)-2-(9Z,12Z,15Z-octadeatrienoyl)-sn-glycero-3-phospho-(1'-sn-glycerol-3'-phosphate)Lipid Annotator, HMDB
PGP(18:3(6Z,9Z,12Z)/18:3(9Z,12Z,15Z))Lipid Annotator
Predicted Properties
Water Solubility0.0013 g/LALOGPS
pKa (Strongest Acidic)1.35ChemAxon
pKa (Strongest Basic)-3.4ChemAxon
Physiological Charge-3ChemAxon
Hydrogen Acceptor Count8ChemAxon
Hydrogen Donor Count4ChemAxon
Polar Surface Area195.35 ŲChemAxon
Rotatable Bond Count40ChemAxon
Refractivity231.29 m³·mol⁻¹ChemAxon
Polarizability92.35 ųChemAxon
Number of Rings0ChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Chemical FormulaC42H72O13P2
IUPAC name[(2S)-2-hydroxy-3-({hydroxy[(2R)-3-[(6Z,9Z,12Z)-octadeca-6,9,12-trienoyloxy]-2-[(9Z,12Z,15Z)-octadeca-9,12,15-trienoyloxy]propoxy]phosphoryl}oxy)propoxy]phosphonic acid
InChI IdentifierInChI=1S/C42H72O13P2/c1-3-5-7-9-11-13-15-17-19-21-23-25-27-29-31-33-41(44)51-37-40(38-54-57(49,50)53-36-39(43)35-52-56(46,47)48)55-42(45)34-32-30-28-26-24-22-20-18-16-14-12-10-8-6-4-2/h6,8,11-14,17-20,23,25,39-40,43H,3-5,7,9-10,15-16,21-22,24,26-38H2,1-2H3,(H,49,50)(H2,46,47,48)/b8-6-,13-11-,14-12-,19-17-,20-18-,25-23-/t39-,40+/m0/s1
Average Molecular Weight846.9608
Monoisotopic Molecular Weight846.444815414
Description Belongs to the class of organic compounds known as phosphatidylglycerophosphates. These are glycerophosphoglycerophosphates in which two fatty acids are bonded to the 1-glycerol moiety through ester linkages.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
Sub ClassGlycerophosphoglycerophosphates
Direct ParentPhosphatidylglycerophosphates
Alternative Parents
  • Diacylglycerophosphoglycerophosphate
  • Sn-glycerol-3-phosphate
  • Fatty acid ester
  • Monoalkyl phosphate
  • Dialkyl phosphate
  • Dicarboxylic acid or derivatives
  • Organic phosphoric acid derivative
  • Phosphoric acid ester
  • Alkyl phosphate
  • Fatty acyl
  • Secondary alcohol
  • Carboxylic acid ester
  • Carboxylic acid derivative
  • Organooxygen compound
  • Organic oxide
  • Organic oxygen compound
  • Alcohol
  • Carbonyl group
  • Hydrocarbon derivative
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External DescriptorsNot Available
Physiological effect

Organoleptic effect:


Route of exposure:


Biological location:


Naturally occurring process:


Industrial application:

Biological role:

Physico-Chemical Properties - Experimental
Physico-Chemical Properties - Experimental
Physical stateSolid
Physical DescriptionNot Available
Mass CompositionNot Available
Melting PointNot Available
Boiling PointNot Available
Experimental Water SolubilityNot Available
Experimental logPNot Available
Experimental pKaNot Available
Isoelectric pointNot Available
ChargeNot Available
Optical RotationNot Available
Spectroscopic UV DataNot Available
DensityNot Available
Refractive IndexNot Available
EI-MS/GC-MSNot Available
TypeDescriptionSplash KeyView
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-02vj-1361191260-9650504037adb1b05236Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-07y1-4494173220-3097f273f83ab00f654fSpectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0a4i-9346252400-a4f1e6e635df4ba24df5Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-004i-4090020020-309065d445cf2a245145Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-004i-9050000000-832a3aec3d2eb70cb5cdSpectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-004i-9000000000-df6dabb5bc477029b12cSpectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0002-3210090870-9cf99b4f014ce94c9bfcSpectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-052b-1200036900-d1817ace5165c3e6102dSpectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-001i-0200940000-72771ffdbeaabfd7604cSpectrum
NMRNot Available
ChemSpider IDNot Available
ChEMBL IDNot Available
KEGG Compound IDNot Available
Pubchem Compound ID53481887
Pubchem Substance IDNot Available
ChEBI IDNot Available
Phenol-Explorer IDNot Available
DrugBank IDNot Available
CRC / DFC (Dictionary of Food Compounds) IDNot Available
EAFUS IDNot Available
Dr. Duke IDNot Available
BIGG IDNot Available
KNApSAcK IDNot Available
HET IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
Flavornet IDNot Available
GoodScent IDNot Available
SuperScent IDNot Available
Wikipedia IDNot Available
Phenol-Explorer Metabolite IDNot Available
Duplicate IDSNot Available
Old DFC IDSNot Available
Associated Foods
FoodContent Range AverageReference
Biological Effects and Interactions
Health Effects / BioactivitiesNot Available
EnzymesNot Available
PathwaysNot Available
MetabolismNot Available
BiosynthesisNot Available
Organoleptic Properties
FlavoursNot Available
MSDSNot Available
Synthesis ReferenceNot Available
General ReferenceNot Available
Content Reference