SPHK2 — Sphingosine kinase 2
SPHK2 belongs to a gene co-expression module in 1 of 30 SCUBA cell types. Each module groups genes that rise and fall together in that cell type; the genes it shares a module with are its closest co-expression partners there.
SPHK2's module in each cell type
| Cell type | Module | Shares the module with | |
|---|---|---|---|
| Colonocytes | Mature Colonocyte Metabolism Nutrient processing | ACADS, ACSF2, ADIRF, AGFG2, B4GALNT2, CA1, CA2, CHP2 +37 more | View in SCUBA |
About the gene
| Chromosome | 19: 48619291-48630717 |
|---|---|
| Predicted location | Intracellular |
| Essential gene | No |
| Protein class | Disease related genes, Enzymes, Metabolic proteins, Potential drug targets, Predicted intracellular proteins |
| Molecular function | Kinase, Transferase |
| Biological process | Lipid metabolism |
Function
Catalyzes the phosphorylation of sphingosine to form sphingosine-1-phosphate (SPP), a lipid mediator with both intra- and extracellular functions. Also acts on D-erythro-dihydrosphingosine, D- erythro-sphingosine and L-threo-dihydrosphingosine. Binds phosphoinositides. In contrast to prosurvival SPHK1, has a positive effect on intracellular ceramide levels, inhibits cells growth and enhances apoptosis. In mitochondria, is important for cytochrome-c oxidase assembly and mitochondrial respiration. The SPP produced in mitochondria binds PHB2 and modulates the regulation via PHB2 of complex IV assembly and respiration. In nucleus, plays a role in epigenetic regulation of gene expression. Interacts with HDAC1 and HDAC2 and, through SPP production, inhibits their enzymatic activity, preventing the removal of acetyl groups from lysine residues with histones. Up- regulates acetylation of histone H3-K9, histone H4-K5 and histone H2B- K12. In nucleus, may have an inhibitory effect on DNA synthesis and cell cycle. In mast cells, is the main regulator of SPP production which mediates calcium influx, NF-kappa-B activation, cytokine production, such as TNF and IL6, and degranulation of mast cells (By similarity). In dopaminergic neurons, is involved in promoting mitochondrial functions regulating ATP and ROS levels (By similarity). Also involved in the regulation of glucose and lipid metabolism (By similarity).
Human Protein Atlas · Open Targets · UniProt
Gene annotation from the Human Protein Atlas and UniProt; see sources & licences.