Record Information |
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Version | 5.0 |
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Status | Detected and Quantified |
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Creation Date | 2009-03-24 16:22:24 UTC |
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Update Date | 2022-03-07 02:51:20 UTC |
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HMDB ID | HMDB0012102 |
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Secondary Accession Numbers | |
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Metabolite Identification |
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Common Name | SM(d18:1/20:0) |
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Description | Sphingomyelin (d18:1/20:0) or SM(d18:1/20:0) is a type of sphingolipid found in animal cell membranes, especially in the membranous myelin sheath which surrounds some nerve cell axons. It usually consists of phosphorylcholine and ceramide. SM(d18:1/20:0) consists of a sphingosine backbone and an arachidic acid chain. In humans, sphingomyelin is the only membrane phospholipid not derived from glycerol. Like all sphingolipids, SM has a ceramide core (sphingosine bonded to a fatty acid via an amide linkage). In addition, it 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 localize 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. |
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Structure | CCCCCCCCCCCCCCCCCCCC(=O)N[C@@H](COP([O-])(=O)OCC[N+](C)(C)C)[C@H](O)\C=C\CCCCCCCCCCCCC InChI=1S/C43H87N2O6P/c1-6-8-10-12-14-16-18-20-21-22-23-25-27-29-31-33-35-37-43(47)44-41(40-51-52(48,49)50-39-38-45(3,4)5)42(46)36-34-32-30-28-26-24-19-17-15-13-11-9-7-2/h34,36,41-42,46H,6-33,35,37-40H2,1-5H3,(H-,44,47,48,49)/b36-34+/t41-,42+/m0/s1 |
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Synonyms | Value | Source |
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(2S,3R,4E)-3-Hydroxy-2-(icosanoylamino)octadec-4-en-1-yl 2-(trimethylammonio)ethyl phosphate | ChEBI | C20 Sphingomyelin | ChEBI | N-(Eicosanoyl)-sphing-4-enine-1-phosphocholine | ChEBI | N-Arachidoylsphing-4-enine-1-phosphocholine | ChEBI | N-Arachidoylsphingosine-1-phosphocholine | ChEBI | N-Eicosanoylsphing-4-enine-1-phosphocholine | ChEBI | N-Eicosanoylsphingosine-1-phosphocholine | ChEBI | N-Icosanoylsphing-4-enine-1-phosphocholine | ChEBI | Sphingomyelin (D18:1/20:0) | ChEBI | (2S,3R,4E)-3-Hydroxy-2-(icosanoylamino)octadec-4-en-1-yl 2-(trimethylammonio)ethyl phosphoric acid | Generator | Sphingomyelin | HMDB | N-(Eicosanoyl)-1-phosphocholine-sphing-4-enine | HMDB | Sphingomyelin(D18:1/20:0) | HMDB | N-(Eicosanoyl)-1-phosphocholine-sphingosine | HMDB | N-(Eicosanoyl)-1-phosphocholine-D-erythro-sphingosine | HMDB | N-(Eicosanoyl)-1-phosphocholine-4-sphingenine | HMDB | N-(Eicosanoyl)-1-phosphocholine-D-sphingosine | HMDB | N-(Eicosanoyl)-1-phosphocholine-sphingenine | HMDB | N-(Eicosanoyl)-1-phosphocholine-erythro-4-sphingenine | HMDB | SM D18:1/20:0 | HMDB | Sphingomyelin (D18:1,C20:0) | HMDB | SM(d18:1/20:0) | HMDB |
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Chemical Formula | C43H87N2O6P |
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Average Molecular Weight | 759.1344 |
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Monoisotopic Molecular Weight | 758.630175038 |
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IUPAC Name | (2-{[(2S,3R,4E)-3-hydroxy-2-icosanamidooctadec-4-en-1-yl phosphonato]oxy}ethyl)trimethylazanium |
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Traditional Name | C20 sphingomyelin |
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CAS Registry Number | 121999-68-6 |
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SMILES | CCCCCCCCCCCCCCCCCCCC(=O)N[C@@H](COP([O-])(=O)OCC[N+](C)(C)C)[C@H](O)\C=C\CCCCCCCCCCCCC |
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InChI Identifier | InChI=1S/C43H87N2O6P/c1-6-8-10-12-14-16-18-20-21-22-23-25-27-29-31-33-35-37-43(47)44-41(40-51-52(48,49)50-39-38-45(3,4)5)42(46)36-34-32-30-28-26-24-19-17-15-13-11-9-7-2/h34,36,41-42,46H,6-33,35,37-40H2,1-5H3,(H-,44,47,48,49)/b36-34+/t41-,42+/m0/s1 |
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InChI Key | AADLTHQNYQJHQV-SVLGDMRNSA-N |
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Chemical Taxonomy |
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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. |
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Kingdom | Organic compounds |
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Super Class | Lipids and lipid-like molecules |
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Class | Sphingolipids |
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Sub Class | Phosphosphingolipids |
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Direct Parent | Phosphosphingolipids |
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Alternative Parents | |
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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
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Molecular Framework | Aliphatic acyclic compounds |
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External Descriptors | |
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Ontology |
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Not Available | Not Available |
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Physical Properties |
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State | Solid |
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Experimental Molecular Properties | Property | Value | Reference |
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Melting Point | Not Available | Not Available | Boiling Point | Not Available | Not Available | Water Solubility | Not Available | Not Available | LogP | Not Available | Not Available |
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Experimental Chromatographic Properties | Not Available |
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Predicted Molecular Properties | |
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Predicted Chromatographic Properties | Predicted Collision Cross SectionsPredicted Kovats Retention IndicesUnderivatized |
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| GC-MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
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Predicted GC-MS | Predicted GC-MS Spectrum - SM(d18:1/20:0) GC-MS (TMS_1_1) - 70eV, Positive | Not Available | 2021-10-18 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - SM(d18:1/20:0) GC-MS (TMS_1_2) - 70eV, Positive | Not Available | 2021-10-18 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - SM(d18:1/20:0) GC-MS (TBDMS_1_1) - 70eV, Positive | Not Available | 2021-10-18 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - SM(d18:1/20:0) GC-MS (TBDMS_1_2) - 70eV, Positive | Not Available | 2021-10-18 | Wishart Lab | View Spectrum |
MS/MS SpectraSpectrum Type | Description | Splash Key | Deposition Date | Source | View |
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Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:1/20:0) 10V, Positive-QTOF | splash10-0a59-0600000900-5b4cff52d6df9849cfe8 | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:1/20:0) 20V, Positive-QTOF | splash10-0a59-0600000900-5b4cff52d6df9849cfe8 | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:1/20:0) 40V, Positive-QTOF | splash10-001i-0900000300-6eca8cf99cee8c209a7f | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:1/20:0) 10V, Negative-QTOF | splash10-0a4i-0000000900-1c5a50ecf71ca4de55c2 | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:1/20:0) 20V, Negative-QTOF | splash10-0a4i-0000002900-1abef486fb233250a398 | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:1/20:0) 40V, Negative-QTOF | splash10-004i-9010101000-33fb5106cf573e187e72 | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:1/20:0) 10V, Positive-QTOF | splash10-014i-0000010900-01c80412a022cdd36a09 | 2021-09-23 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:1/20:0) 20V, Positive-QTOF | splash10-0160-0000070900-c8daf55505f476216786 | 2021-09-23 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:1/20:0) 40V, Positive-QTOF | splash10-001i-0000090200-13c71f150654ca0a53fb | 2021-09-23 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:1/20:0) 10V, Positive-QTOF | splash10-001i-0000010900-c275849ac4c16ee247cc | 2021-09-25 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:1/20:0) 20V, Positive-QTOF | splash10-001k-0000070900-dece1a9425b67c77456a | 2021-09-25 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:1/20:0) 40V, Positive-QTOF | splash10-0002-0000090200-21c735e418b45346d94a | 2021-09-25 | Wishart Lab | View Spectrum |
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General References | - Simons K, Toomre D: Lipid rafts and signal transduction. Nat Rev Mol Cell Biol. 2000 Oct;1(1):31-9. [PubMed:11413487 ]
- 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 ]
- 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 ]
- 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 ]
- Divecha N, Irvine RF: Phospholipid signaling. Cell. 1995 Jan 27;80(2):269-78. [PubMed:7834746 ]
- 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 ]
- Hannun YA: The sphingomyelin cycle and the second messenger function of ceramide. J Biol Chem. 1994 Feb 4;269(5):3125-8. [PubMed:8106344 ]
- Elshenawy S, Pinney SE, Stuart T, Doulias PT, Zura G, Parry S, Elovitz MA, Bennett MJ, Bansal A, Strauss JF 3rd, Ischiropoulos H, Simmons RA: The Metabolomic Signature of the Placenta in Spontaneous Preterm Birth. Int J Mol Sci. 2020 Feb 4;21(3). pii: ijms21031043. doi: 10.3390/ijms21031043. [PubMed:32033212 ]
- Cevc, Gregor (1993). Phospholipids Handbook. Marcel Dekker.
- Gunstone, Frank D., John L. Harwood, and Albert J. Dijkstra (2007). The lipid handbook with CD-ROM. CRC Press.
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