Sphingosine

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Sphingosine
Sphingosine structure.svg
Sphingosine-3D-spacefill.png
Names
Preferred IUPAC name
(2S,3R,4E)-2-Aminooctadec-4-ene-1,3-diol
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.004.230 OOjs UI icon edit-ltr-progressive.svg
PubChem CID
UNII
  • InChI=1S/C18H37NO2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-18(21)17(19)16-20/h14-15,17-18,20-21H,2-13,16,19H2,1H3/b15-14+/t17-,18+/m0/s1 Yes check.svgY
    Key: WWUZIQQURGPMPG-KRWOKUGFSA-N Yes check.svgY
  • InChI=1/C18H37NO2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-18(21)17(19)16-20/h14-15,17-18,20-21H,2-13,16,19H2,1H3/b15-14+/t17-,18+/m0/s1
    Key: WWUZIQQURGPMPG-KRWOKUGFBW
  • CCCCCCCCCCCCC/C=C/[C@H]([C@H](CO)N)O
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.

Contents

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 sphinganine (dihydrosphingosine).

Sphingosine synthesis corrected.png

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

See also

Literature

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