Record Information
Version1.0
StatusDetected and Quantified
Creation Date2020-12-10 18:52:09 UTC
Update Date2024-04-30 19:33:25 UTC
Metabolite IDMMDBc0000660
Metabolite Identification
Common NameSM(d18:1/26:1(17Z))
DescriptionSphingomyelin (d18:0/26:1(17Z)) or SM(d18:0/26:1(17Z)) is a type of sphingolipid found in animal cell membranes, especially in the membranous myelin sheath which surrounds some nerve cell axons. In humans, sphingomyelin is the only membrane phospholipid not derived from glycerol. Like all sphingolipids, SPH 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 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.
Structure
Synonyms
ValueSource
C26:1 SphingomyelinChEBI
N-(17Z-Hexacosenoyl)-sphing-4-enine-1-phosphocholineChEBI
N-(Tricosanoyl)-sphing-4-enine-1-phosphocholineHMDB
SphingomyelinHMDB
N-(17Z-Hexacosenoyl)-1-phosphocholine-sphing-4-enineMetBuilder
Sphingomyelin(D18:1/26:1(17Z))MetBuilder
N-(17Z-Hexacosenoyl)-1-phosphocholine-sphingosineMetBuilder
N-(17Z-Hexacosenoyl)-1-phosphocholine-D-erythro-sphingosineMetBuilder
N-(17Z-Hexacosenoyl)-1-phosphocholine-4-sphingenineMetBuilder
N-(17Z-Hexacosenoyl)-1-phosphocholine-D-sphingosineMetBuilder
N-(17Z-Hexacosenoyl)-1-phosphocholine-sphingenineMetBuilder
N-(17Z-Hexacosenoyl)-1-phosphocholine-erythro-4-sphingenineMetBuilder
SM(D18:1/26:1(17Z))ChEBI
N-(17Z-Hexacosenoyl)-1-phosphocholine-sphinganineMetBuilder
Sphingomyelin(D18:0/26:1(17Z))MetBuilder
N-(17Z-Hexacosenoyl)-1-phosphocholine-dihydrosphingosineMetBuilder
N-(17Z-Hexacosenoyl)-1-phosphocholine-D-erythro-sphinganineMetBuilder
Molecular FormulaC49H97N2O6P
Average Mass841.278
Monoisotopic Mass840.708425358
IUPAC Name(2-{[(2S,3R,4E)-2-[(17Z)-hexacos-17-enamido]-3-hydroxyoctadec-4-en-1-yl phosphono]oxy}ethyl)trimethylazanium
Traditional Name(2-{[(2S,3R,4E)-2-[(17Z)-hexacos-17-enamido]-3-hydroxyoctadec-4-en-1-yl phosphono]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)CCCCCCCCCCCCCCC\C=C/CCCCCCCC
InChI Identifier
InChI=1S/C49H97N2O6P/c1-6-8-10-12-14-16-18-20-21-22-23-24-25-26-27-28-29-31-33-35-37-39-41-43-49(53)50-47(46-57-58(54,55)56-45-44-51(3,4)5)48(52)42-40-38-36-34-32-30-19-17-15-13-11-9-7-2/h20-21,40,42,47-48,52H,6-19,22-39,41,43-46H2,1-5H3,(H-,50,53,54,55)/b21-20-,42-40+/t47-,48+/m0/s1
InChI KeyYXEXWUZHFGYOHJ-UOJCCMJYSA-N