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SPHK / SPHK1 catalyzes the phosphorylation of sphingosine to form sphingosine-1-phosphate (S1P), a lipid mediator with both intra- and extracellular functions. Intracellularly, S1P regulates proliferation and survival, and extracellularly, it is a ligand for cell surface G protein-coupled receptors. This protein, and its product S1P, play a key role in TNF-alpha signaling and the NF-kappa-B activation pathway important in inflammatory, antiapoptotic, and immune processes. Alternatively spliced transcript variants encoding different isoforms have been found for this gene.
Gene Name: | sphingosine kinase 1 |
Family/Subfamily: | Non-protein Kinase , Sphingosine |
Synonyms: | SPHK1, SK1, Sphingosine kinase 1, SPHK, SK 1, SPK 1, Sphingosine kinase type 1, SPK |
Target Sequences: | NM_021972 NP_068807.2 Q9NYA1 |
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