RefMet Compound Details

RefMet ID, RefMet name, exact mass and formula
RefMet IDRM0172655
RefMet namePI 18:3(6Z,9Z,12Z)/18:0
Systematic name1-(6Z,9Z,12Z-octadecatrienoyl)-2-octadecanoyl-sn-glycero-3-phosphoinositol
SynonymsPubChem Synonyms
Sum CompositionPI 18:21 View other entries in RefMet with this sum composition
Exact mass860.541483 (neutral)
Calculate m/z:   
View other RefMet entries with this exact (neutral) mass:   +/- 0.05 amu   +/- 0.1 amu   +/- 0.2 amu   +/- 0.5 amu
FormulaC45H81O13PView other entries in RefMet with this formula
Molecular descriptors
Molfile19160 (Download molfile/View MW Metabolite Database details)
InChIInChI=1S/C45H81O13P/c1-3-5-7-9-11-13-15-17-19-21-23-25-27-29-31-33-38(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)34-32-30-28-26-24-22-20-18-16-14-12-10-8-6-4-2/h11,13,17,19,23,25,37,40-45,48-52H,3-10,12,14-16,18,20-22,24,26-36H2
,1-2H3,(H,53,54)/b13-11-,19-17-,25-23-/t37-,40-,41-,42+,43-,44-,45-/m1/s1
InChIKeyVSINDPRRAFDFGR-QPEBEBOVSA-NView other enantiomers/diastereomers of this metabolite in RefMet
SMILESCCCCC/C=CC/C=CC/C=CCCCCC(=O)OC[C@H](COP(=O)(O)O[C@@H]1C([C@@H](C(C(C1O)O)O)O)O)OC(=O)CCCCCCCCCCCCCCCCC
Run Tanimoto similarity search (with similarity coefficient >=0.6)
Chemical/Biochemical Classification
Super ClassGlycerophospholipids
Main ClassGlycerophosphoinositols
Sub ClassPI (Phosphatidylinositols)
Distribution of PI 18:3(6Z,9Z,12Z)/18:0 in NMDR studies
SpeciesPlot Species distribution
Sample sourcePlot Sample source(tissue) distribution
PlatformPlatform (MS/NMR) used for detection
ChromatographyChromatography methods used for detection
StudiesNMDR Studies reporting PI 18:3(6Z,9Z,12Z)/18:0
External Links
Pubchem CID52927798
LIPID MAPSLMGP06010345
KEGG IDC01194
HMDB IDHMDB0009858
Structural annotation level
Annotation level3   (1:Known structure; 2:Known regiochemistry; 3:Partial structure; 4:Sum-composition)

Table of KEGG reactions in human pathways involving PI 18:3(6Z,9Z,12Z)/18:0

Rxn IDKEGG ReactionEnzyme
R01802 CDP-diacylglycerol + myo-Inositol <=> CMP + 1-Phosphatidyl-D-myo-inositolCDP-diacylglycerol:myo-inositol 3-phosphatidyltransferase
R03332 1-Phosphatidyl-D-myo-inositol + H2O <=> Inositol 1-phosphate + 1,2-Diacyl-sn-glycerol1-Phosphatidyl-D-myo-inositol inositolphosphohydrolase
R03361 ATP + 1-Phosphatidyl-D-myo-inositol <=> ADP + 1-Phosphatidyl-1D-myo-inositol 4-phosphateATP:1-Phosphatidyl-1D-myo-inositol 4-phosphotransferase
R03362 ATP + 1-Phosphatidyl-D-myo-inositol <=> ADP + 1-Phosphatidyl-1D-myo-inositol 3-phosphateATP:1-phosphatidyl-1D-myo-inositol 3-phosphotransferase
R03363 1-Phosphatidyl-1D-myo-inositol 3-phosphate + H2O <=> 1-Phosphatidyl-D-myo-inositol + Orthophosphate1-Phosphatidyl-1D-myo-inositol 3-phosphate 3-phosphohydrolase
R05916 UDP-N-acetyl-D-glucosamine + 1-Phosphatidyl-D-myo-inositol <=> UDP + G00143UDP-N-acetyl-D-glucosamine + 1-Phosphatidyl-D-myo-inositol <=> UDP + G00143
R09034 Acyl-CoA + 1-Acylglycerophosphoinositol <=> CoA + 1-Phosphatidyl-D-myo-inositolacyl-CoA:1-acyl-sn-glycero-3-phosphoinositol O-acyltransferase
R10951 ATP + 1-Phosphatidyl-D-myo-inositol <=> ADP + 1-Phosphatidyl-1D-myo-inositol 5-phosphateATP:1-phosphatidyl-1D-myo-inositol 5-phosphotransferase
R11680 1-Phosphatidyl-1D-myo-inositol 4-phosphate + H2O <=> 1-Phosphatidyl-D-myo-inositol + Orthophosphate1-Phosphatidyl-1D-myo-inositol 4-phosphate + H2O <=> 1-Phosphatidyl-D-myo-inositol + Orthophosphate

Table of KEGG human pathways containing PI 18:3(6Z,9Z,12Z)/18:0

Pathway IDHuman Pathway# of reactions
hsa04070 Phosphatidylinositol signaling system 7
hsa00562 Inositol phosphate metabolism 5
hsa00564 Glycerophospholipid metabolism 2
hsa00563 Glycosylphosphatidylinositol (GPI)-anchor biosynthesis 1
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