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Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2009-03-24 16:22:18 UTC
Update Date2022-11-30 19:04:10 UTC
HMDB IDHMDB0012096
Secondary Accession Numbers
  • HMDB12096
Metabolite Identification
Common NameSM(d18:1/12:0)
DescriptionSM(d18:1/12:0) is a sphingomyelin (SM). Sphingomyelins are members of the class of compounds known as sphingolipids (SPs), or glycosylceramides. SPs are lipids containing a backbone of sphingoid bases (e.g. sphingosine or sphinganine) that are often covalently bound to a fatty acid derivative through N-acylation. SPs are found in cell membranes, particularly in peripheral nerve cells and the cells found in the central nervous system (including the brain and spinal cord). Sphingolipids are extremely versatile molecules that have functions controlling fundamental cellular processes such as cell division, differentiation, and cell death. Impairments associated with sphingolipid metabolism are associated with many common human diseases such as diabetes, various cancers, microbial infections, diseases of the cardiovascular and respiratory systems, Alzheimer’s disease and other neurological syndromes. The biosynthesis and catabolism of sphingolipids involves a large number of intermediate metabolites where many different enzymes are involved. Simple sphingolipids, which include the sphingoid bases and ceramides, make up the early products of the sphingolipid synthetic pathways, while complex sphingolipids may be formed by the addition of head groups to the ceramide template (Wikipedia). SM is the major sphingolipid in mammals it is found in animal cell membranes, especially in the membranous myelin sheath that surrounds some nerve cell axons. It usually consists of phosphocholine and ceramide, or a phosphoethanolamine head group. In humans, sphingomyelin is the only membrane phospholipid not derived from glycerol. SM contains one polar head group, which is either phosphocholine or phosphoethanolamine. The plasma membrane of cells is highly enriched in sphingomyelin and is considered largely to be found in the exoplasmic leaflet of the cell membrane. However, there is some evidence that there may also be a sphingomyelin pool in the inner leaflet of the membrane. Moreover, neutral sphingomyelinase-2 - an enzyme that breaks down sphingomyelin into ceramide has been found to localise exclusively to the inner leaflet further suggesting that there may be sphingomyelin present there. Sphingomyelin can accumulate in a rare hereditary disease called Niemann-Pick Disease, types A and B. Niemann-Pick disease is a genetically-inherited disease caused by a deficiency in the enzyme sphingomyelinase, which causes the accumulation of sphingomyelin in spleen, liver, lungs, bone marrow, and the brain, causing irreversible neurological damage. SMs play a role in signal transduction. Sphingomyelins are synthesized by the transfer of phosphorylcholine from phosphatidylcholine to a ceramide in a reaction catalyzed by sphingomyelin synthase. In terms of its appearance and structure, SM(d18:1/12:0) consists of an unsaturated 18-carbon sphingoid base with an attached saturated dodecanoyl fatty acid side chain. In most mammalian SPs, the 18-carbon sphingoid bases are predominant (PMID: 9759481 ).
Structure
Data?1582753011
Synonyms
ValueSource
C12 SphingomyelinHMDB
N-(Dodecanoyl)-sphing-4-enine-1-phosphocholineHMDB
N-Lauroyl-D-erythro-sphingosylphosphoryl cholineHMDB
SphingomyelinHMDB
N-(Dodecanoyl)-1-phosphocholine-sphing-4-enineHMDB
Sphingomyelin(D18:1/12:0)HMDB
N-(Dodecanoyl)-1-phosphocholine-sphingosineHMDB
N-(Dodecanoyl)-1-phosphocholine-D-erythro-sphingosineHMDB
N-(Dodecanoyl)-1-phosphocholine-4-sphingenineHMDB
N-(Dodecanoyl)-1-phosphocholine-D-sphingosineHMDB
N-(Dodecanoyl)-1-phosphocholine-sphingenineHMDB
N-(Dodecanoyl)-1-phosphocholine-erythro-4-sphingenineHMDB
Chemical FormulaC35H71N2O6P
Average Molecular Weight646.9218
Monoisotopic Molecular Weight646.504974526
IUPAC Name(2-{[(2S,3R,4E)-2-dodecanamido-3-hydroxyoctadec-4-en-1-yl phosphonato]oxy}ethyl)trimethylazanium
Traditional Name(2-{[(2S,3R,4E)-2-dodecanamido-3-hydroxyoctadec-4-en-1-yl phosphonato]oxy}ethyl)trimethylazanium
CAS Registry NumberNot Available
SMILES
CCCCCCCCCCCCC\C=C\[C@@H](O)[C@H](COP([O-])(=O)OCC[N+](C)(C)C)NC(=O)CCCCCCCCCCC
InChI Identifier
InChI=1S/C35H71N2O6P/c1-6-8-10-12-14-16-17-18-19-21-22-24-26-28-34(38)33(32-43-44(40,41)42-31-30-37(3,4)5)36-35(39)29-27-25-23-20-15-13-11-9-7-2/h26,28,33-34,38H,6-25,27,29-32H2,1-5H3,(H-,36,39,40,41)/b28-26+/t33-,34+/m0/s1
InChI KeyHZCLJRFPXMKWHR-FEBLJDHQSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as phosphosphingolipids. These are sphingolipids with a structure based on a sphingoid base that is attached to a phosphate head group. They differ from phosphonospingolipids which have a phosphonate head group.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassSphingolipids
Sub ClassPhosphosphingolipids
Direct ParentPhosphosphingolipids
Alternative Parents
Substituents
  • Sphingoid-1-phosphate or derivatives
  • Phosphocholine
  • Phosphoethanolamine
  • Dialkyl phosphate
  • Fatty amide
  • N-acyl-amine
  • Organic phosphoric acid derivative
  • Phosphoric acid ester
  • Fatty acyl
  • Alkyl phosphate
  • Tetraalkylammonium salt
  • Quaternary ammonium salt
  • Secondary carboxylic acid amide
  • Secondary alcohol
  • Carboxamide group
  • Carboxylic acid derivative
  • Organic zwitterion
  • Alcohol
  • Organic oxide
  • Organooxygen compound
  • Organonitrogen compound
  • Organopnictogen compound
  • Organic oxygen compound
  • Organic nitrogen compound
  • Hydrocarbon derivative
  • Carbonyl group
  • Amine
  • Organic salt
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Ontology
Physiological effect
Disposition
Biological locationRoute of exposureSource
Process
Role
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
Water Solubility4.6e-05 g/LALOGPS
logP4.25ALOGPS
logP6.29ChemAxon
logS-7.2ALOGPS
pKa (Strongest Acidic)1.87ChemAxon
pKa (Strongest Basic)0.012ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area107.92 ŲChemAxon
Rotatable Bond Count32ChemAxon
Refractivity195.54 m³·mol⁻¹ChemAxon
Polarizability79.96 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityNoChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DeepCCS[M+H]+259.49830932474
DeepCCS[M-H]-257.67330932474
DeepCCS[M-2H]-290.91630932474
DeepCCS[M+Na]+265.11630932474
AllCCS[M+H]+271.032859911
AllCCS[M+H-H2O]+270.532859911
AllCCS[M+NH4]+271.432859911
AllCCS[M+Na]+271.632859911
AllCCS[M-H]-262.432859911
AllCCS[M+Na-2H]-265.932859911
AllCCS[M+HCOO]-269.732859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
SM(d18:1/12:0)CCCCCCCCCCCCC\C=C\[C@@H](O)[C@H](COP([O-])(=O)OCC[N+](C)(C)C)NC(=O)CCCCCCCCCCC4392.6Standard polar33892256
SM(d18:1/12:0)CCCCCCCCCCCCC\C=C\[C@@H](O)[C@H](COP([O-])(=O)OCC[N+](C)(C)C)NC(=O)CCCCCCCCCCC3729.2Standard non polar33892256
SM(d18:1/12:0)CCCCCCCCCCCCC\C=C\[C@@H](O)[C@H](COP([O-])(=O)OCC[N+](C)(C)C)NC(=O)CCCCCCCCCCC4479.0Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
SM(d18:1/12:0),1TMS,isomer #1CCCCCCCCCCCCC/C=C/[C@@H](O[Si](C)(C)C)[C@H](COP(=O)([O-])OCC[N+](C)(C)C)NC(=O)CCCCCCCCCCC4267.8Semi standard non polar33892256
SM(d18:1/12:0),1TMS,isomer #2CCCCCCCCCCCCC/C=C/[C@@H](O)[C@H](COP(=O)([O-])OCC[N+](C)(C)C)N(C(=O)CCCCCCCCCCC)[Si](C)(C)C4298.1Semi standard non polar33892256
SM(d18:1/12:0),2TMS,isomer #1CCCCCCCCCCCCC/C=C/[C@@H](O[Si](C)(C)C)[C@H](COP(=O)([O-])OCC[N+](C)(C)C)N(C(=O)CCCCCCCCCCC)[Si](C)(C)C4322.4Semi standard non polar33892256
SM(d18:1/12:0),2TMS,isomer #1CCCCCCCCCCCCC/C=C/[C@@H](O[Si](C)(C)C)[C@H](COP(=O)([O-])OCC[N+](C)(C)C)N(C(=O)CCCCCCCCCCC)[Si](C)(C)C4161.3Standard non polar33892256
SM(d18:1/12:0),2TMS,isomer #1CCCCCCCCCCCCC/C=C/[C@@H](O[Si](C)(C)C)[C@H](COP(=O)([O-])OCC[N+](C)(C)C)N(C(=O)CCCCCCCCCCC)[Si](C)(C)C4875.3Standard polar33892256
SM(d18:1/12:0),1TBDMS,isomer #1CCCCCCCCCCCCC/C=C/[C@@H](O[Si](C)(C)C(C)(C)C)[C@H](COP(=O)([O-])OCC[N+](C)(C)C)NC(=O)CCCCCCCCCCC4582.4Semi standard non polar33892256
SM(d18:1/12:0),1TBDMS,isomer #2CCCCCCCCCCCCC/C=C/[C@@H](O)[C@H](COP(=O)([O-])OCC[N+](C)(C)C)N(C(=O)CCCCCCCCCCC)[Si](C)(C)C(C)(C)C4533.0Semi standard non polar33892256
SM(d18:1/12:0),2TBDMS,isomer #1CCCCCCCCCCCCC/C=C/[C@@H](O[Si](C)(C)C(C)(C)C)[C@H](COP(=O)([O-])OCC[N+](C)(C)C)N(C(=O)CCCCCCCCCCC)[Si](C)(C)C(C)(C)C4803.1Semi standard non polar33892256
SM(d18:1/12:0),2TBDMS,isomer #1CCCCCCCCCCCCC/C=C/[C@@H](O[Si](C)(C)C(C)(C)C)[C@H](COP(=O)([O-])OCC[N+](C)(C)C)N(C(=O)CCCCCCCCCCC)[Si](C)(C)C(C)(C)C4469.6Standard non polar33892256
SM(d18:1/12:0),2TBDMS,isomer #1CCCCCCCCCCCCC/C=C/[C@@H](O[Si](C)(C)C(C)(C)C)[C@H](COP(=O)([O-])OCC[N+](C)(C)C)N(C(=O)CCCCCCCCCCC)[Si](C)(C)C(C)(C)C4835.1Standard polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - SM(d18:1/12:0) GC-MS (TMS_1_1) - 70eV, PositiveNot Available2021-10-17Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - SM(d18:1/12:0) GC-MS (TMS_1_2) - 70eV, PositiveNot Available2021-10-17Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - SM(d18:1/12:0) GC-MS (TBDMS_1_1) - 70eV, PositiveNot Available2021-10-17Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - SM(d18:1/12:0) GC-MS (TBDMS_1_2) - 70eV, PositiveNot Available2021-10-17Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - SM(d18:1/12:0) GC-MS ("SM(d18:1/12:0),1TMS,#1" TMS) - 70eV, PositiveNot Available2021-11-02Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - SM(d18:1/12:0) 10V, Positive-QTOFsplash10-0udi-0000119000-12f4f78497383af177952021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - SM(d18:1/12:0) 20V, Positive-QTOFsplash10-0ur0-0000929000-cbbf7f7c9506460209a72021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - SM(d18:1/12:0) 40V, Positive-QTOFsplash10-00di-0000911000-a347a0296da95f64c8212021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - SM(d18:1/12:0) 10V, Positive-QTOFsplash10-000t-0600009000-9c9626f7c1d63d175cd92021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - SM(d18:1/12:0) 20V, Positive-QTOFsplash10-000t-0600009000-9c9626f7c1d63d175cd92021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - SM(d18:1/12:0) 40V, Positive-QTOFsplash10-001i-0900003000-e3fb6ca76868e3afa2312021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - SM(d18:1/12:0) 10V, Positive-QTOFsplash10-014i-0000109000-74d018f89dc6c564894e2021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - SM(d18:1/12:0) 20V, Positive-QTOFsplash10-0150-0000709000-9694df1aa7fbefb3e9da2021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - SM(d18:1/12:0) 40V, Positive-QTOFsplash10-000i-0000902000-730d818f9723522cedd32021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - SM(d18:1/12:0) 10V, Negative-QTOFsplash10-0002-0000009000-f1196e26f70d6c4e696c2021-09-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - SM(d18:1/12:0) 20V, Negative-QTOFsplash10-0002-0000029000-bf385d595383fb3279832021-09-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - SM(d18:1/12:0) 40V, Negative-QTOFsplash10-004i-9103010000-f9506ae49d896ecfc7eb2021-09-25Wishart LabView Spectrum
Biological Properties
Cellular Locations
  • Extracellular
  • Membrane
Biospecimen LocationsNot Available
Tissue LocationsNot Available
Pathways
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB028763
KNApSAcK IDNot Available
Chemspider ID24846872
KEGG Compound IDC00550
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound44260123
PDB IDNot Available
ChEBI ID17636
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Simons K, Toomre D: Lipid rafts and signal transduction. Nat Rev Mol Cell Biol. 2000 Oct;1(1):31-9. [PubMed:11413487 ]
  2. Watson AD: Thematic review series: systems biology approaches to metabolic and cardiovascular disorders. Lipidomics: a global approach to lipid analysis in biological systems. J Lipid Res. 2006 Oct;47(10):2101-11. Epub 2006 Aug 10. [PubMed:16902246 ]
  3. Sethi JK, Vidal-Puig AJ: Thematic review series: adipocyte biology. Adipose tissue function and plasticity orchestrate nutritional adaptation. J Lipid Res. 2007 Jun;48(6):1253-62. Epub 2007 Mar 20. [PubMed:17374880 ]
  4. Lingwood D, Simons K: Lipid rafts as a membrane-organizing principle. Science. 2010 Jan 1;327(5961):46-50. doi: 10.1126/science.1174621. [PubMed:20044567 ]
  5. Divecha N, Irvine RF: Phospholipid signaling. Cell. 1995 Jan 27;80(2):269-78. [PubMed:7834746 ]
  6. Ghosh S, Strum JC, Bell RM: Lipid biochemistry: functions of glycerolipids and sphingolipids in cellular signaling. FASEB J. 1997 Jan;11(1):45-50. [PubMed:9034165 ]
  7. Hannun YA: The sphingomyelin cycle and the second messenger function of ceramide. J Biol Chem. 1994 Feb 4;269(5):3125-8. [PubMed:8106344 ]
  8. Cevc, Gregor (1993). Phospholipids Handbook. Marcel Dekker.
  9. Gunstone, Frank D., John L. Harwood, and Albert J. Dijkstra (2007). The lipid handbook with CD-ROM. CRC Press.

Only showing the first 10 proteins. There are 50 proteins in total.

Enzymes

General function:
Involved in transferase activity, transferring hexosyl groups
Specific function:
Catalyzes the formation of some glycolipid via the addition of N-acetylgalactosamine (GalNAc) in alpha-1,3-linkage to some substrate. Glycolipids probably serve for adherence of some pathogens
Gene Name:
GBGT1
Uniprot ID:
Q8N5D6
Molecular weight:
40126.9
General function:
Involved in N-acetylglucosaminylphosphatidylinositol de
Specific function:
Involved in the second step of GPI biosynthesis. De-N-acetylation of N-acetylglucosaminyl-phosphatidylinositol.
Gene Name:
PIGL
Uniprot ID:
Q9Y2B2
Molecular weight:
28530.965
General function:
Involved in hydrolase activity
Specific function:
Converts sphingomyelin to ceramide. Also has phospholipase C activities toward 1,2-diacylglycerolphosphocholine and 1,2-diacylglycerolphosphoglycerol. Isoform 2 and isoform 3 have lost catalytic activity.
Gene Name:
SMPD1
Uniprot ID:
P17405
Molecular weight:
69935.53
General function:
Involved in galactosylgalactosylxylosylprotein 3-beta-glucuronosyltransferase activity
Specific function:
Involved in the biosynthesis of L2/HNK-1 carbohydrate epitope on glycoproteins. Can also play a role in glycosaminoglycan biosynthesis. Substrates include asialo-orosomucoid (ASOR), asialo-fetuin, and asialo-neural cell adhesion molecule. Requires sphingomyelin for activity: stearoyl-sphingomyelin was the most effective, followed by palmitoyl-sphingomyelin and lignoceroyl-sphingomyelin. Activity was demonstrated only for sphingomyelin with a saturated fatty acid and not for that with an unsaturated fatty acid, regardless of the length of the acyl group (By similarity).
Gene Name:
B3GAT1
Uniprot ID:
Q9P2W7
Molecular weight:
38255.675
General function:
Involved in phosphatidylinositol N-acetylglucosaminyltransferase activity
Specific function:
Part of the complex catalyzing the transfer of N-acetylglucosamine from UDP-N-acetylglucosamine to phosphatidylinositol, the first step of GPI biosynthesis.
Gene Name:
PIGQ
Uniprot ID:
Q9BRB3
Molecular weight:
65343.25
General function:
Involved in biosynthetic process
Specific function:
Necessary for the synthesis of N-acetylglucosaminyl-phosphatidylinositol, the very early intermediate in GPI-anchor biosynthesis.
Gene Name:
PIGA
Uniprot ID:
P37287
Molecular weight:
54126.065
General function:
Involved in phosphatidylinositol N-acetylglucosaminyltr
Specific function:
Part of the complex catalyzing the transfer of N-acetylglucosamine from UDP-N-acetylglucosamine to phosphatidylinositol, the first step of GPI biosynthesis.
Gene Name:
PIGH
Uniprot ID:
Q14442
Molecular weight:
21080.415
General function:
Involved in phosphatidylinositol N-acetylglucosaminyltr
Specific function:
Part of the complex catalyzing the transfer of N-acetylglucosamine from UDP-N-acetylglucosamine to phosphatidylinositol, the first step of GPI biosynthesis.
Gene Name:
PIGP
Uniprot ID:
P57054
Molecular weight:
18089.055
General function:
Involved in phosphatidylinositol N-acetylglucosaminyltransferase activity
Specific function:
Part of the complex catalyzing the transfer of N-acetylglucosamine from UDP-N-acetylglucosamine to phosphatidylinositol, the first step of GPI biosynthesis.
Gene Name:
PIGC
Uniprot ID:
Q92535
Molecular weight:
33582.18
General function:
Involved in catalytic activity
Specific function:
Converts sphingomyelin to ceramide. Also has phospholipase C activity toward palmitoyl lyso-phosphocholine. Does not appear to have nucleotide pyrophosphatase activity.
Gene Name:
ENPP7
Uniprot ID:
Q6UWV6
Molecular weight:
51493.415

Only showing the first 10 proteins. There are 50 proteins in total.