Sphingosine Kinase 1 (Sphk1) catalyzes the phosphorylation of sphingosine to sphingosine 1 phosphate (S1P), an important signaling molecule with intra- and extracellular functions. Inside the cell S1P acts as a signaling molecule like other sphingolipid metabolites like ceramide and sphingosine. S1P has been implicated in regulating cell differentiation, calcium mobilization from intracellular stores, and apoptosis. The cell surface receptors for S1P are the EDG family of G protein-coupled receptors (S1P Receptors).
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Protein Aliases: Acetyltransferase SPHK1; RP23-193A16.4; SK 1; SKase; Sphingosine kinase 1; SPK 1
Gene Aliases: SK1; SPHK; SPHK1; SPK
UniProt ID: (Human) Q9NYA1
Entrez Gene ID: (Human) 8877
Molecular Function: kinase