Record Information |
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Version | 5.0 |
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Status | Expected but not Quantified |
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Creation Date | 2020-06-08 21:31:48 UTC |
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Update Date | 2022-11-30 19:53:43 UTC |
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HMDB ID | HMDB0240668 |
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Secondary Accession Numbers | None |
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Metabolite Identification |
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Common Name | SM(d18:2(4E,14Z)/23:1(9Z)) |
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Description | Sphingomyelin (d18:2(4E,14Z)/23:1(9Z)) or SM(d18:2(4E,14Z)/23:1(9Z)) 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(d18:2(4E,14Z)/23:1(9Z)) consists of a sphinga-4E,14Z-dienine backbone and a 9Z-tricosanoic 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 | [H][C@@](COP([O-])(=O)OCC[N+](C)(C)C)(NC(=O)CCCCCCC\C=C/CCCCCCCCCCCCC)[C@H](O)\C=C\CCCCCCCC\C=C/CCC InChI=1S/C46H89N2O6P/c1-6-8-10-12-14-16-18-20-21-22-23-24-25-26-28-30-32-34-36-38-40-46(50)47-44(43-54-55(51,52)53-42-41-48(3,4)5)45(49)39-37-35-33-31-29-27-19-17-15-13-11-9-7-2/h11,13,25-26,37,39,44-45,49H,6-10,12,14-24,27-36,38,40-43H2,1-5H3,(H-,47,50,51,52)/b13-11-,26-25-,39-37+/t44-,45+/m0/s1 |
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Synonyms | Value | Source |
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SM D18:2(4E,14Z)/23:1(9Z) | HMDB | SM D18:2/23:1 | HMDB | SM(D18:2/23:1) | HMDB | Sphingomyelin (D18:2(4E,14Z),C23:1(9Z)) | HMDB | Sphingomyelin (D18:2(4E,14Z)/23:1(9Z)) | HMDB | Sphingomyelin (D18:2,C23:1) | HMDB | Sphingomyelin (D18:2/23:1) | HMDB | SM(d18:2(4E,14Z)/23:1(9Z)) | HMDB |
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Chemical Formula | C46H89N2O6P |
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Average Molecular Weight | 797.2 |
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Monoisotopic Molecular Weight | 796.645825592 |
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IUPAC Name | (2-{[(2S,3R,4E,14Z)-3-hydroxy-2-[(9Z)-tricos-9-enamido]octadeca-4,14-dien-1-yl phosphono]oxy}ethyl)trimethylazanium |
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Traditional Name | (2-{[(2S,3R,4E,14Z)-3-hydroxy-2-[(9Z)-tricos-9-enamido]octadeca-4,14-dien-1-yl phosphono]oxy}ethyl)trimethylazanium |
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CAS Registry Number | Not Available |
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SMILES | [H][C@@](COP([O-])(=O)OCC[N+](C)(C)C)(NC(=O)CCCCCCC\C=C/CCCCCCCCCCCCC)[C@H](O)\C=C\CCCCCCCC\C=C/CCC |
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InChI Identifier | InChI=1S/C46H89N2O6P/c1-6-8-10-12-14-16-18-20-21-22-23-24-25-26-28-30-32-34-36-38-40-46(50)47-44(43-54-55(51,52)53-42-41-48(3,4)5)45(49)39-37-35-33-31-29-27-19-17-15-13-11-9-7-2/h11,13,25-26,37,39,44-45,49H,6-10,12,14-24,27-36,38,40-43H2,1-5H3,(H-,47,50,51,52)/b13-11-,26-25-,39-37+/t44-,45+/m0/s1 |
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InChI Key | PUTLJICFLAOKRD-BHWNGCFYSA-N |
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Chemical Taxonomy |
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Description | Belongs to the class of organic compounds known as phosphocholines. Phosphocholines are compounds containing a [2-(trimethylazaniumyl)ethoxy]phosphonic acid or derivative. |
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Kingdom | Organic compounds |
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Super Class | Organic nitrogen compounds |
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Class | Organonitrogen compounds |
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Sub Class | Quaternary ammonium salts |
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Direct Parent | Phosphocholines |
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Alternative Parents | |
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Substituents | - Phosphocholine
- Dialkyl phosphate
- Alkyl phosphate
- Phosphoric acid ester
- Organic phosphoric acid derivative
- Tetraalkylammonium salt
- Secondary alcohol
- Organic 1,3-dipolar compound
- Propargyl-type 1,3-dipolar organic compound
- Carboximidic acid derivative
- Carboximidic acid
- Organic oxygen compound
- Organopnictogen compound
- Organic oxide
- Hydrocarbon derivative
- Organic salt
- Organic zwitterion
- Organooxygen compound
- Amine
- Alcohol
- Aliphatic acyclic compound
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Molecular Framework | Aliphatic acyclic compounds |
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External Descriptors | Not Available |
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Ontology |
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Physiological effect | |
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Disposition | |
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Process | |
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Role | |
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Physical Properties |
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State | Not Available |
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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(d18:2(4E,14Z)/23:1(9Z)) GC-MS (TMS_1_1) - 70eV, Positive | Not Available | 2021-10-19 | Wishart Lab | View Spectrum | Predicted GC-MS | Predicted GC-MS Spectrum - SM(d18:2(4E,14Z)/23:1(9Z)) GC-MS (TMS_1_2) - 70eV, Positive | Not Available | 2021-10-19 | 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(d18:2(4E,14Z)/23:1(9Z)) 10V, Negative-QTOF | splash10-0002-0000000900-0a7c5d391efd583979bc | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:2(4E,14Z)/23:1(9Z)) 20V, Negative-QTOF | splash10-0002-1000002900-ea8e0c655e34fba0a37d | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:2(4E,14Z)/23:1(9Z)) 40V, Negative-QTOF | splash10-004i-9000000000-aa6aa93cf0e523fb3803 | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:2(4E,14Z)/23:1(9Z)) 10V, Positive-QTOF | splash10-014i-0000001190-be47c5502ba8d773e3ff | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:2(4E,14Z)/23:1(9Z)) 20V, Positive-QTOF | splash10-0150-0000009290-0fbbeadf0eab054102ec | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:2(4E,14Z)/23:1(9Z)) 40V, Positive-QTOF | splash10-000i-0000019110-1bee4e23a81169d0c30f | 2021-09-22 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:2(4E,14Z)/23:1(9Z)) 10V, Positive-QTOF | splash10-000t-0600000900-b430ad58efe654937f02 | 2021-09-23 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:2(4E,14Z)/23:1(9Z)) 20V, Positive-QTOF | splash10-000t-0600000900-b430ad58efe654937f02 | 2021-09-23 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:2(4E,14Z)/23:1(9Z)) 40V, Positive-QTOF | splash10-001i-0900000300-40e3caabce47434ab718 | 2021-09-23 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:2(4E,14Z)/23:1(9Z)) 10V, Positive-QTOF | splash10-0udi-0000001190-a54d87cc7f6e07dee5b8 | 2021-09-25 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:2(4E,14Z)/23:1(9Z)) 20V, Positive-QTOF | splash10-0ur0-0000009290-84559a16ef2b42869dc1 | 2021-09-25 | Wishart Lab | View Spectrum | Predicted LC-MS/MS | Predicted LC-MS/MS Spectrum - SM(d18:2(4E,14Z)/23:1(9Z)) 40V, Positive-QTOF | splash10-00di-0000019110-50e33e5487b39292cfb1 | 2021-09-25 | Wishart Lab | View Spectrum |
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