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Record Information
Version3.6
Creation Date2010-05-13 16:09:51 UTC
Update Date2013-02-09 00:30:32 UTC
HMDB IDHMDB13546
Secondary Accession NumbersNone
Metabolite Identification
Common NamePGP(18:1(9Z)/22:6(4Z,7Z,10Z,13Z,16Z,19Z))
DescriptionPGP(18:1(9Z)/22:6(4Z,7Z,10Z,13Z,16Z,19Z)) 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(18:1(9Z)/22:6(4Z,7Z,10Z,13Z,16Z,19Z)), in particular, consists of one chain of oleic acid at the C-1 position and one chain of docosahexaenoic acid at the C-2 position. The oleic acid moiety is derived from vegetable oils, especially olive and canola oil, while the docosahexaenoic acid moiety is derived from fish oils. 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.
Structure
Thumb
Synonyms
  1. 1-Oleoyl-2-docosahexaenoyl-sn-glycero-3-phospho-(1'-sn-glycerol-3'-phosphate)
  2. 3-Sn-phosphatidyl-1'-sn-glycerol 3'-phosphoric acid
  3. PGP(18:1/22:6)
  4. PGP(18:1n9/22:6n3)
  5. PGP(18:1w9/22:6w3)
  6. PGP(40:7)
Chemical FormulaC46H78O13P2
Average Molecular Weight901.0512
Monoisotopic Molecular Weight900.491765606
IUPAC Name[(2S)-3-({[(2R)-2-[(4Z,7Z,10Z,13Z,16Z,19Z)-docosa-4,7,10,13,16,19-hexaenoyloxy]-3-[(9Z)-octadec-9-enoyloxy]propoxy](hydroxy)phosphoryl}oxy)-2-hydroxypropoxy]phosphonic acid
Traditional IUPAC Name(2S)-3-{[(2R)-2-[(4Z,7Z,10Z,13Z,16Z,19Z)-docosa-4,7,10,13,16,19-hexaenoyloxy]-3-[(9Z)-octadec-9-enoyloxy]propoxy(hydroxy)phosphoryl]oxy}-2-hydroxypropoxyphosphonic acid
CAS Registry NumberNot Available
SMILES
CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@]([H])(COP(=O)(O)OC[C@@]([H])(O)COP(=O)(O)O)OC(=O)CC\C=C/C\C=C/C\C=C/C\C=C/C\C=C/C\C=C/CC
InChI Identifier
InChI=1S/C46H78O13P2/c1-3-5-7-9-11-13-15-17-19-20-21-22-24-26-28-30-32-34-36-38-46(49)59-44(42-58-61(53,54)57-40-43(47)39-56-60(50,51)52)41-55-45(48)37-35-33-31-29-27-25-23-18-16-14-12-10-8-6-4-2/h5,7,11,13,17-19,21-23,26,28,32,34,43-44,47H,3-4,6,8-10,12,14-16,20,24-25,27,29-31,33,35-42H2,1-2H3,(H,53,54)(H2,50,51,52)/b7-5-,13-11-,19-17-,22-21-,23-18-,28-26-,34-32-/t43-,44+/m0/s1
InChI KeyIJLGTUSMDTXIPD-JJTNLPPNSA-N
Chemical Taxonomy
KingdomOrganic Compounds
Super ClassLipids
ClassGlycerophospholipids
Sub ClassGlycerophosphoglycerophosphates
Other Descriptors
  • Aliphatic Acyclic Compounds
Substituents
  • 1,2 Diacylglycerophosphoradylglycerol
  • Acyclic Alkene
  • Carboxylic Acid Ester
  • Dicarboxylic Acid Derivative
  • Fatty Acid Ester
  • Organic Hypophosphite
  • Organic Phosphite
  • Phosphoric Acid Ester
  • Secondary Alcohol
Direct ParentPhosphatidylglycerophosphates
Ontology
StatusExpected and Not Quantified
Origin
  • Endogenous
  • Food
Biofunction
  • Cell signaling
  • Energy source
  • Fuel and energy storage
  • Fuel or energy source
  • Membrane component
  • Membrane integrity/stability
Application
  • Nutrients
  • Stabilizers
  • Surfactants and Emulsifiers
Cellular locations
  • Extracellular
  • Membrane
Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
Water Solubility6.540E-04 g/LALOGPS
logP7.63ALOGPS
logP11.84ChemAxon
logS-6.1ALOGPS
pKa (Strongest Acidic)1.35ChemAxon
pKa (Strongest Basic)-3.4ChemAxon
Physiological Charge-3ChemAxon
Hydrogen Acceptor Count8ChemAxon
Hydrogen Donor Count4ChemAxon
Polar Surface Area195.35ChemAxon
Rotatable Bond Count43ChemAxon
Refractivity250.81ChemAxon
Polarizability100.06ChemAxon
Spectra
SpectraNot Available
Biological Properties
Cellular Locations
  • Extracellular
  • Membrane
Biofluid LocationsNot Available
Tissue Location
  • All Tissues
PathwaysNot Available
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
DrugBank Metabolite IDNot Available
Phenol Explorer Compound IDNot Available
Phenol Explorer Metabolite IDNot Available
FoodDB IDFDB029546
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
NuGOwiki LinkHMDB13546
Metagene LinkHMDB13546
METLIN IDNot Available
PubChem Compound53481864
PDB IDNot Available
ChEBI IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available