PI(20:0/16:0) (CHEM039184)

IdentificationTaxonomyBiological PropertiesPhysical PropertiesToxicity ProfileSpectraConcentrationsLinksReferencesXML
Record Information
Version1.0
Creation Date2016-05-26 15:50:16 UTC
Update Date2016-11-09 01:22:01 UTC
Accession NumberCHEM039184
Identification
Common NamePI(20:0/16:0)
ClassSmall Molecule
DescriptionPI(20:0/16:0)is a phosphatidylinositol. Phosphatidylinositols are important lipids, both as a key membrane constituent and as a participant in essential metabolic processes, both directly and via a number of metabolites. Phosphatidylinositols are acidic (anionic) phospholipids that consist of a phosphatidic acid backbone, linked via the phosphate group to inositol (hexahydroxycyclohexane). Phosphatidylinositols 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 18 and 20 carbons are the most common.PI(20:0/16:0), in particular, consists of one eicosanoyl chain to the C-1 atom, and one hexadecanoyl to the C-2 atom. In most organisms, the stereochemical form of the last is myo-D-inositol (with one axial hydroxyl in position 2 with the remainder equatorial. Phosphatidylinositol can be phosphorylated by a number of different kinases that place the phosphate moiety on positions 4 and 5 of the inositol ring, although position 3 can also be phosphorylated by a specific kinase. Seven different isomers are known, but the most important in both quantitative and biological terms are phosphatidylinositol 4-phosphate and phosphatidylinositol 4,5-bisphosphate. Phosphatidylinositol and the phosphatidylinositol phosphates are the main source of diacylglycerols that serve as signaling molecules, via the action of phospholipase C enzymes. 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. PIs contain almost exclusively stearic acid at carbon 1 and arachidonic acid at carbon 2. PIs composed exclusively of non-phosphorylated inositol exhibit a net charge of -1 at physiological pH. Molecules with phosphorylated inositol (such as PIP, PIP2, PIP3, etc.) are termed polyphosphoinositides. The polyphosphoinositides are important intracellular transducers of signals emanating from the plasma membrane. The synthesis of PI involves CDP-activated 1,2-diacylglycerol condensation with myo-inositol.
Contaminant Sources
  • FooDB Chemicals
Contaminant TypeNot Available
Chemical Structure
Thumb
MOLSDFPDBSMILESInChI
Synonyms
ValueSource
PIno(36:0)Lipid Annotator, HMDB
PIno(20:0/16:0)Lipid Annotator, HMDB
1-eicosanoyl-2-hexadecanoyl-sn-glycero-3-phospho-(1'-myo-inositol)Lipid Annotator, HMDB
1-arachidonyl-2-palmitoyl-sn-glycero-3-phosphoinositolLipid Annotator, HMDB
Phosphatidylinositol(20:0/16:0)Lipid Annotator, HMDB
PI(36:0)Lipid Annotator, HMDB
Phosphatidylinositol(36:0)Lipid Annotator, HMDB
1-eicosanoyl-2-hexadecanoyl-sn-glycero-3-phosphoinositolLipid Annotator, HMDB
PI(20:0/16:0)Lipid Annotator
Chemical FormulaC45H87O13P
Average Molecular Mass867.138 g/mol
Monoisotopic Mass866.588 g/mol
CAS Registry NumberNot Available
IUPAC Name[(2R)-2-(hexadecanoyloxy)-3-(icosanoyloxy)propoxy]({[(1s,3R)-2,3,4,5,6-pentahydroxycyclohexyl]oxy})phosphinic acid
Traditional Name(2R)-2-(hexadecanoyloxy)-3-(icosanoyloxy)propoxy([(1s,3R)-2,3,4,5,6-pentahydroxycyclohexyl]oxy)phosphinic acid
SMILES[H][C@@](COC(=O)CCCCCCCCCCCCCCCCCCC)(COP(O)(=O)O[C@H]1C(O)C(O)C(O)[C@@H](O)C1O)OC(=O)CCCCCCCCCCCCCCC
InChI IdentifierInChI=1S/C45H87O13P/c1-3-5-7-9-11-13-15-17-18-19-20-22-23-25-27-29-31-33-38(46)55-35-37(36-56-59(53,54)58-45-43(51)41(49)40(48)42(50)44(45)52)57-39(47)34-32-30-28-26-24-21-16-14-12-10-8-6-4-2/h37,40-45,48-52H,3-36H2,1-2H3,(H,53,54)/t37-,40?,41-,42?,43?,44?,45-/m1/s1
InChI KeyUMFZCISVEAONBN-SNXKPFKBSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as phosphatidylinositols. These are glycerophosphoinositols where the glycerol is esterified with two fatty acids.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassGlycerophospholipids
Sub ClassGlycerophosphoinositols
Direct ParentPhosphatidylinositols
Alternative Parents
Substituents
  • Diacylglycerophosphoinositol
  • Inositol phosphate
  • Cyclohexanol
  • Dialkyl phosphate
  • Fatty acid ester
  • Cyclitol or derivatives
  • Fatty acyl
  • Alkyl phosphate
  • Dicarboxylic acid or derivatives
  • Phosphoric acid ester
  • Organic phosphoric acid derivative
  • Cyclic alcohol
  • Carboxylic acid ester
  • Secondary alcohol
  • Carboxylic acid derivative
  • Polyol
  • Hydrocarbon derivative
  • Organic oxide
  • Alcohol
  • Carbonyl group
  • Organic oxygen compound
  • Organooxygen compound
  • Aliphatic homomonocyclic compound
Molecular FrameworkAliphatic homomonocyclic compounds
External Descriptors
Biological Properties
StatusDetected and Not Quantified
OriginNot Available
Cellular LocationsNot Available
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateNot Available
AppearanceNot Available
Experimental Properties
PropertyValue
Melting PointNot Available
Boiling PointNot Available
SolubilityNot Available
Predicted Properties
PropertyValueSource
Water Solubility0.00041 g/LALOGPS
logP7.64ALOGPS
logP10.77ChemAxon
logS-6.3ALOGPS
pKa (Strongest Acidic)1.83ChemAxon
pKa (Strongest Basic)-3.6ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count9ChemAxon
Hydrogen Donor Count6ChemAxon
Polar Surface Area209.51 ŲChemAxon
Rotatable Bond Count42ChemAxon
Refractivity228.97 m³·mol⁻¹ChemAxon
Polarizability103.77 ųChemAxon
Number of Rings1ChemAxon
Bioavailability0ChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-014i-0000000090-99719f4c1dd1a4224db4Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-014i-0000000090-99719f4c1dd1a4224db4Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a6v-0075509010-8eba859d02f85e68419aSpectrum
Toxicity Profile
Route of ExposureNot Available
Mechanism of ToxicityNot Available
MetabolismNot Available
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)Not Available
Uses/SourcesNot Available
Minimum Risk LevelNot Available
Health EffectsNot Available
SymptomsNot Available
TreatmentNot Available
Concentrations
Not Available
DrugBank IDNot Available
HMDB IDHMDB0009866
FooDB IDFDB027056
Phenol Explorer IDNot Available
KNApSAcK IDNot Available
BiGG IDNot Available
BioCyc IDNot Available
METLIN IDNot Available
PDB IDNot Available
Wikipedia LinkNot Available
Chemspider ID24767751
ChEBI ID88679
PubChem Compound IDNot Available
Kegg Compound IDNot Available
YMDB IDNot Available
ECMDB IDNot Available
References
Synthesis ReferenceNot Available
MSDSNot Available
General ReferencesNot Available