Chemistry:Sphingosine

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Sphingosine
Skeletal formula of sphingosine
Space-filling model of the sphingosine molecule
Names
Preferred IUPAC name
(2S,3R,4E)-2-Aminooctadec-4-ene-1,3-diol
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
UNII
Properties
C18H37NO2
Molar mass 299.499 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Sphingosine (2-amino-4-trans-octadecene-1,3-diol) is an 18-carbon amino alcohol with an unsaturated hydrocarbon chain, which forms a primary part of sphingolipids, a class of cell membrane lipids that include sphingomyelin, an important phospholipid.

Functions

Sphingosine can be phosphorylated in vivo via two kinases, sphingosine kinase type 1 and sphingosine kinase type 2. This leads to the formation of sphingosine-1-phosphate, a potent signaling lipid.

Sphingolipid metabolites, such as ceramides, sphingosine and sphingosine-1-phosphate, are lipid signaling molecules involved in diverse cellular processes.

Biosynthesis

Sphingosine is synthesized from palmitoyl CoA and serine in a condensation required to yield dihydrosphingosine.

Sphingosine synthesis

Dehydrosphingosine is then reduced by NADPH to dihydrosphingosine (sphinganine), acylated to dihydroceramide finally oxidized by FAD to ceramide. Sphingosine is then solely formed via degradation of sphingolipid in the lysosome.

Gallery

See also

Literature

External links