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Record Information
Version4.0
StatusDetected and Quantified
Creation Date2008-09-12 01:34:00 UTC
Update Date2018-05-20 10:12:48 UTC
HMDB IDHMDB0008258
Secondary Accession Numbers
  • HMDB08258
Metabolite Identification
Common NamePC(18:4(6Z,9Z,12Z,15Z)/P-16:0)
DescriptionPC(18:4(6Z,9Z,12Z,15Z)/P-16:0) is a phosphatidylcholine (PC or GPCho). It is a glycerophospholipid in which a phosphorylcholine moiety occupies a glycerol substitution site. As is the case with diacylglycerols, glycerophosphocholines 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. PC(18:4(6Z,9Z,12Z,15Z)/P-16:0), in particular, consists of one chain of stearidonic acid at the C-1 position and one chain of plasmalogen 16:0 at the C-2 position. The stearidonic acid moiety is derived from seed oils, while the plasmalogen 16:0 moiety is derived from animal fats, liver and kidney. Phospholipids, are ubiquitous in nature and are key components of the lipid bilayer of cells, as well as being involved in metabolism and signaling. 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. PCs can be synthesized via three different routes. In one route, choline is activated first by phosphorylation and then by coupling to CDP prior to attachment to phosphatidic acid. PCs can also synthesized by the addition of choline to CDP-activated 1,2-diacylglycerol. A third route to PC synthesis involves the conversion of either PS or PE to PC. Plasmalogens are glycerol ether phospholipids. They are of two types, alkyl ether (-O-CH2-) and alkenyl ether (-O-CH=CH-). Dihydroxyacetone phosphate (DHAP) serves as the glycerol precursor for the synthesis of plasmalogens. Three major classes of plasmalogens have been identified: choline, ethanolamine and serine derivatives. Ethanolamine plasmalogen is prevalent in myelin. Choline plasmalogen is abundant in cardiac tissue. Usually, the highest proportion of the plasmalogen form is in the ethanolamine class with rather less in choline, and commonly little or none in other phospholipids such as phosphatidylinositol. In choline plasmalogens of most tissues, a higher proportion is often of the O-alkyl rather than the O-alkenyl form, but the reverse tends to be true in heart lipids. In animal tissues, the alkyl and alkenyl moieties in both non-polar and phospholipids tend to be rather simple in composition with 16:0, 18:0 and 18:1 (double bond in position 9) predominating. Ether analogues of triacylglycerols, i.e. 1-alkyldiacyl-sn-glycerols, are present at trace levels only if at all in most animal tissues, but they can be major components of some marine lipids.
Structure
Thumb
Synonyms
ValueSource
GlycerophosphocholineMetBuilder
1-(6Z,9Z,12Z,15Z-Octadecatetraenoyl)-2-(1Z-hexadecenyl)-sn-glycero-3-phosphocholineMetBuilder
Glycerophosphocholine(18:4(6Z,9Z,12Z,15Z)/p-16:0)MetBuilder
PC(18:4)MetBuilder
gpcho(18:4)MetBuilder
Phosphatidylcholine(18:4)MetBuilder
PC(18:4/P-16:0)MetBuilder
gpcho(18:4/P-16:0)MetBuilder
Phosphatidylcholine(18:4/p-16:0)MetBuilder
Chemical FormulaC42H76NO7P
Average Molecular Weight738.0291
Monoisotopic Molecular Weight737.535940303
IUPAC Name[2-({2-[(1Z)-hexadec-1-en-1-yloxy]-3-[(6Z,9Z,12Z,15Z)-octadeca-6,9,12,15-tetraenoyloxy]propyl phosphonato}oxy)ethyl]trimethylazanium
Traditional Namelecithin
CAS Registry NumberNot Available
SMILES
CCCCCCCCCCCCCC\C=C/OC(COC(=O)CCCC\C=C/C\C=C/C\C=C/C\C=C/CC)COP([O-])(=O)OCC[N+](C)(C)C
InChI Identifier
InChI=1S/C42H76NO7P/c1-6-8-10-12-14-16-18-20-22-23-25-27-29-31-33-35-42(44)48-39-41(40-50-51(45,46)49-38-36-43(3,4)5)47-37-34-32-30-28-26-24-21-19-17-15-13-11-9-7-2/h8,10,14,16,20,22,25,27,34,37,41H,6-7,9,11-13,15,17-19,21,23-24,26,28-33,35-36,38-40H2,1-5H3/b10-8-,16-14-,22-20-,27-25-,37-34-
InChI KeyCLSCXJAQDUXCBA-DWIAYCKOSA-N
Chemical Taxonomy
DescriptionThis compound belongs to the class of organic compounds known as 1-acyl,2-(1z-alkenyl)-glycerophosphocholines. These are glycerophosphocholines that carry exactly one acyl chain attached to the glycerol moiety through an ester linkage at the O1-position, and one 1Z-alkenyl chain attached through an ether linkage at the O2-position.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassGlycerophospholipids
Sub ClassGlycerophosphocholines
Direct Parent1-acyl,2-(1Z-alkenyl)-glycerophosphocholines
Alternative Parents
Substituents
  • 1-acyl,2-(1z-alkenyl)-glycerophosphocholine
  • Phosphocholine
  • Glycerol vinyl ether
  • Fatty acid ester
  • Dialkyl phosphate
  • Organic phosphoric acid derivative
  • Phosphoric acid ester
  • Alkyl phosphate
  • Fatty acyl
  • Quaternary ammonium salt
  • Tetraalkylammonium salt
  • Carboxylic acid ester
  • Monocarboxylic acid or derivatives
  • Carboxylic acid derivative
  • Amine
  • Organic oxide
  • Organopnictogen compound
  • Organooxygen compound
  • Organonitrogen compound
  • Organic oxygen compound
  • Organic nitrogen compound
  • Carbonyl group
  • Hydrocarbon derivative
  • Organic salt
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External DescriptorsNot Available
Ontology
Physiological effect

Organoleptic effect:

Disposition

Route of exposure:

Source:

Biological location:

Process

Naturally occurring process:

Role

Industrial application:

Biological role:

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 Solubility3.7e-05 g/LALOGPS
logP5.72ALOGPS
logP7.95ChemAxon
logS-7.3ALOGPS
pKa (Strongest Acidic)1.86ChemAxon
pKa (Strongest Basic)-4.8ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area94.12 ŲChemAxon
Rotatable Bond Count37ChemAxon
Refractivity229.87 m³·mol⁻¹ChemAxon
Polarizability89.19 ųChemAxon
Number of Rings0ChemAxon
Bioavailability0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash Key
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-000i-9060321300-4eeff530cb7666b1ea89View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0ac9-4291121000-6a835d32eaaa0e7970a3View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-00ei-5090021000-331238b52485a85a6730View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0550-0090000300-97c649454d50ba478cb2View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-056r-0090001000-1d95d9b88c99ebc2f354View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-056r-3090100000-d08b1a10c696d385a272View in MoNA
Biological Properties
Cellular Locations
  • Extracellular
  • Membrane
Biospecimen Locations
  • Blood
  • Feces
  • Urine
Tissue Locations
  • All Tissues
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified1.87 +/- 0.66 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified0.52 (0.43-0.62) uMNewborn (0-30 days old)Not Available
Normal
details
BloodDetected and Quantified2.76(1.13) uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified0.82 (0.63-1.14) uMInfant (0-1 year old)Not Available
Normal
details
FecesDetected and Quantified0.02 +/- 0.01 nmol/g wet fecesAdult (>18 years old)Both
Normal
details
FecesDetected and Quantified0.05 +/- 0.1 nmol/g wet fecesAdult (>18 years old)Both
Normal
details
UrineDetected and Quantified0.0023 (0.0002-0.018) umol/mmol creatinineAdult (>18 years old)Both
Normal
details
UrineDetected and Quantified0.66 +/- 0.15 umol/mmol creatinineAdolescent (13-18 years old)Both
Normal
details
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified1.40 +/- 0.61 uMChildren (1-13 years old)Both
Obesity
    • Metabolomics reve...
details
BloodDetected and Quantified1.74 +/- 0.59 uMChildren (1-13 years old)Both
Obesity
    • Metabolomics reve...
details
BloodDetected and Quantified1.580 (1.4083) uMAdult (>18 years old)FemalePregnancy with fetus having congenital heart defect details
BloodDetected and Quantified2.9268 (1.229) uMAdult (>18 years old)FemalePregnancy details
BloodDetected and Quantified2.03(0.81) uMAdult (>18 years old)BothHeart failure with preserved ejection fraction details
BloodDetected and Quantified1.87(0.56) uMAdult (>18 years old)BothHeart failure with reduced ejection fraction details
FecesDetected but not Quantified Newborn (0-30 days old)Not Specified
Premature neonates
details
UrineDetected and Quantified0.34 +/- 0.02 umol/mmol creatinineAdolescent (13-18 years old)Both
Obese
details
Predicted Concentrations
BiospecimenValueOriginal ageOriginal sexOriginal conditionComments
Blood0.379 +/- 0.081 uMAdult (>18 years old)BothNormal (Upper Limit)Concentration data updated from parsing Nick's...
Blood0.001 +/- 0.001 uMAdult (>18 years old)BothNormal (Most Probable)Concentration data updated from parsing Nick's...
Associated Disorders and Diseases
Disease References
Pregnancy
  1. Bahado-Singh RO, Ertl R, Mandal R, Bjorndahl TC, Syngelaki A, Han B, Dong E, Liu PB, Alpay-Savasan Z, Wishart DS, Nicolaides KH: Metabolomic prediction of fetal congenital heart defect in the first trimester. Am J Obstet Gynecol. 2014 Sep;211(3):240.e1-240.e14. doi: 10.1016/j.ajog.2014.03.056. Epub 2014 Apr 1. [PubMed:24704061 ]
Obesity
  1. Cho K, Moon JS, Kang JH, Jang HB, Lee HJ, Park SI, Yu KS, Cho JY: Combined untargeted and targeted metabolomic profiling reveals urinary biomarkers for discriminating obese from normal-weight adolescents. Pediatr Obes. 2017 Apr;12(2):93-101. doi: 10.1111/ijpo.12114. Epub 2016 Feb 22. [PubMed:26910390 ]
  2. Simone Wahl, Christina Holzapfel, Zhonghao Yu, Michaela Breier, Ivan Kondofersky, Christiane Fuchs, Paula Singmann, Cornelia Prehn, Jerzy Adamski, Harald Grallert, Thomas Illig, Rui Wang-Sattler, Thomas Reinehr (2013). Metabolomics reveals determinants of weight loss during lifestyle intervention in obese children. Metabolomics.
Associated OMIM IDs
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDNot Available
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound53478871
PDB IDNot Available
ChEBI ID89428
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available

Only showing the first 10 proteins. There are 78 proteins in total.

Enzymes

General function:
Involved in hydrolase activity
Specific function:
Hydrolyzes fatty acids from S-acylated cysteine residues in proteins such as trimeric G alpha proteins or HRAS. Has depalmitoylating activity and also low lysophospholipase activity.
Gene Name:
LYPLA1
Uniprot ID:
O75608
Molecular weight:
24669.355
General function:
Involved in phosphatidylcholine-sterol O-acyltransferase activity
Specific function:
Has transacylase and calcium-independent phospholipase A2 activity. Catalyzes the formation of 1-O-acyl-N-acetylsphingosine and the concomitant release of a lyso-phospholipid (By similarity). May have weak lysophospholipase activity.
Gene Name:
PLA2G15
Uniprot ID:
Q8NCC3
Molecular weight:
Not Available
General function:
Involved in phospholipase A2 activity
Specific function:
PA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides. This isozyme hydrolyzes more efficiently L-alpha-1-palmitoyl-2-oleoyl phosphatidylcholine than L-alpha-1-palmitoyl-2-arachidonyl phosphatidylcholine, L-alpha-1-palmitoyl-2-arachidonyl phosphatidylethanolamine, or L-alpha-1-stearoyl-2-arachidonyl phosphatidylinositol. May be involved in the production of lung surfactant, the remodeling or regulation of cardiac muscle.
Gene Name:
PLA2G5
Uniprot ID:
P39877
Molecular weight:
15674.065
General function:
Involved in phospholipase A2 activity
Specific function:
PA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides. Hydrolyzes phosphatidylglycerol versus phosphatidylcholine with a 15-fold preference.
Gene Name:
PLA2G2F
Uniprot ID:
Q9BZM2
Molecular weight:
23256.29
General function:
Involved in metabolic process
Specific function:
Selectively hydrolyzes arachidonyl phospholipids in the sn-2 position releasing arachidonic acid. Together with its lysophospholipid activity, it is implicated in the initiation of the inflammatory response.
Gene Name:
PLA2G4A
Uniprot ID:
P47712
Molecular weight:
85210.19
General function:
Involved in phospholipase A2 activity
Specific function:
PA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides.
Gene Name:
PLA2G1B
Uniprot ID:
P04054
Molecular weight:
16359.535
General function:
Involved in phospholipase A2 activity
Specific function:
Not known; does not seem to have catalytic activity.
Gene Name:
PLA2G12B
Uniprot ID:
Q9BX93
Molecular weight:
Not Available
General function:
Involved in phospholipase A2 activity
Specific function:
PA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides. Has a powerful potency for releasing arachidonic acid from cell membrane phospholipids. Prefers phosphatidylethanolamine and phosphatidylcholine liposomes to those of phosphatidylserine.
Gene Name:
PLA2G10
Uniprot ID:
O15496
Molecular weight:
18153.04
General function:
Involved in phospholipase A2 activity
Specific function:
PA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides. Has a preference for arachidonic-containing phospholipids.
Gene Name:
PLA2G2E
Uniprot ID:
Q9NZK7
Molecular weight:
15988.525
General function:
Involved in hydrolase activity
Specific function:
May hydrolyze fatty acids from S-acylated cysteine residues in proteins such as trimeric G alpha proteins or HRAS. Has lysophospholipase activity (By similarity). Deacylates GAP43.
Gene Name:
LYPLA2
Uniprot ID:
O95372
Molecular weight:
24736.71

Transporters

General function:
Involved in ATP binding
Specific function:
Mediates ATP-dependent export of organic anions and drugs from the cytoplasm. Hydrolyzes ATP with low efficiency. Human MDR3 is not capable of conferring drug resistance. Mediates the translocation of phosphatidylcholine across the canalicular membrane of the hepatocyte
Gene Name:
ABCB4
Uniprot ID:
P21439
Molecular weight:
141521.8

Only showing the first 10 proteins. There are 78 proteins in total.