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Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2020-02-07 17:52:40 UTC
Update Date2022-11-30 19:53:42 UTC
HMDB IDHMDB0240635
Secondary Accession NumbersNone
Metabolite Identification
Common NameSM(d18:2(4E,14Z)/24:0)
DescriptionSphingomyelin (d18:2(4E,14Z)/24:0) or SM(d18:2(4E,14Z)/24:0) 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(d18:2(4E,14Z)/24:0) consists of a sphinga-4E,14Z-dienine backbone and a lignoceric 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.
Structure
Data?1581098200
Synonyms
ValueSource
SphingomyelinHMDB
N-(Tetracosanoyl)-1-phosphocholine-4E,14Z-sphingdienineHMDB
Sphingomyelin(D18:2/24:0)HMDB
N-(Tetracosanoyl)-1-phosphocholine-sphinga-4E,14Z-dieneHMDB
N-(Tetracosanoyl)-1-phosphocholine-sphinga-4E,14Z-dienineHMDB
N-(Tetracosanoyl)-1-phosphocholine-4,14-sphingenineHMDB
N-(Tetracosanoyl)-1-phosphocholine-(4E,14Z)-4,14-sphingenineHMDB
SM D18:2(4E,14Z)/24:0HMDB
SM D18:2/24:0HMDB
SM(D18:2/24:0)HMDB
Sphingomyelin (D18:2(4E,14Z),C24:0)HMDB
Sphingomyelin (D18:2(4E,14Z)/24:0)HMDB
Sphingomyelin (D18:2,C24:0)HMDB
Sphingomyelin (D18:2/24:0)HMDB
Sphingomyelin(D18:2(4E,14Z)/24:0)HMDB
SM(d18:2(4E,14Z)/24:0)HMDB
Chemical FormulaC47H93N2O6P
Average Molecular Weight813.243
Monoisotopic Molecular Weight812.677125721
IUPAC Name(2-{[(2S,3R,4E,14Z)-3-hydroxy-2-tetracosanamidooctadeca-4,14-dien-1-yl phosphono]oxy}ethyl)trimethylazanium
Traditional Name(2-{[(2S,3R,4E,14Z)-3-hydroxy-2-tetracosanamidooctadeca-4,14-dien-1-yl phosphono]oxy}ethyl)trimethylazanium
CAS Registry Number2292199-45-0
SMILES
[H][C@@](COP([O-])(=O)OCC[N+](C)(C)C)(NC(=O)CCCCCCCCCCCCCCCCCCCCCCC)[C@H](O)\C=C\CCCCCCCC\C=C/CCC
InChI Identifier
InChI=1S/C47H93N2O6P/c1-6-8-10-12-14-16-18-20-21-22-23-24-25-26-27-29-31-33-35-37-39-41-47(51)48-45(44-55-56(52,53)54-43-42-49(3,4)5)46(50)40-38-36-34-32-30-28-19-17-15-13-11-9-7-2/h11,13,38,40,45-46,50H,6-10,12,14-37,39,41-44H2,1-5H3,(H-,48,51,52,53)/b13-11-,40-38+/t45-,46+/m0/s1
InChI KeyDACOGJMBYLZYDH-GXJPFUDISA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as sphingomyelins. These are sphingolipids containing a backbone formed of an alcohol - sphingosine, a phosphate group, a choline and fatty acid chain.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassSphingolipids
Sub ClassPhosphosphingolipids
Direct ParentSphingomyelins
Alternative Parents
Substituents
  • Ceramide phosphocholine
  • 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
Process
Role
Physical Properties
StateNot Available
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
Predicted Chromatographic Properties
Spectra
Biological Properties
Cellular LocationsNot Available
Biospecimen LocationsNot Available
Tissue Locations
  • Placenta
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 IDNot Available
KNApSAcK IDNot Available
Chemspider ID113381542
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound52931217
PDB IDNot Available
ChEBI IDNot Available
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. 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 ]