Lysophospholipid (S1P) receptors


More information on this family may be found on the IUPHAR-DB family and introduction pages.


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Sphingosine 1-phosphate (S1P) receptors (nomenclature as agreed by NC-IUPHAR Subcommittee on Lysophospholipid receptors; [5]) are activated by the endogenous lipid derivatives sphingosine 1-phosphate (S1P) and sphingosyl phosphorylcholine (SPC). Originally identified as members of the endothelial differentiation gene (edg) family along with lysophosphatidic acid receptors, the gene names have recently been updated to S1PR1, etc. to reflect the receptor function of these proteins. S1P has also been described to act at intracellular sites [15], although most cellular phenomena ascribed to S1P can be explained by receptor-mediated mechanisms. The relationship between recombinant and endogenously expressed receptors is unclear. Radioligand binding has been conducted in heterologous expression systems using [32P]S1P (e.g [10]). In native systems, analysis of binding data is complicated by metabolism and high levels of nonspecific binding. Targeted deletion of several S1P receptors and key enzymes involved in S1P biosynthesis or degradation has clarified signalling pathways and physiological roles.


Unless otherwise stated all data refer to the human proteins. Gene information is provided for human (Hs), mouse (Mm) and rat (Rn).

Receptors

S1P1 receptor Show »

S1P2 receptor Show »

S1P3 receptor Show »

S1P4 receptor Show »

S1P5 receptor Show »


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