Biology:1-phosphatidylinositol-5-phosphate 4-kinase
| 1-phosphatidylinositol-5-phosphate 4-kinase | |||||||||
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| Identifiers | |||||||||
| EC number | 2.7.1.149 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
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In enzymology, a 1-phosphatidylinositol-5-phosphate 4-kinase (EC 2.7.1.149) is an enzyme that catalyzes the chemical reaction
- ATP + 1-phosphatidyl-1D-myo-inositol 5-phosphate [math]\displaystyle{ \rightleftharpoons }[/math] ADP + 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate
Thus, the two substrates of this enzyme are ATP and 1-phosphatidyl-1D-myo-inositol 5-phosphate, whereas its two products are ADP and 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate.
This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing groups (phosphotransferases) with an alcohol group as acceptor. The systematic name of this enzyme class is ATP:1-phosphatidyl-1D-myo-inositol-5-phosphate 4-phosphotransferase. This enzyme is also called type II PIP kinase. This enzyme participates in 3 metabolic pathways: inositol phosphate metabolism, phosphatidylinositol signaling system, and regulation of actin cytoskeleton.
References
- "A new pathway for synthesis of phosphatidylinositol-4,5-bisphosphate". Nature 390 (6656): 192–6. 1997. doi:10.1038/36621. PMID 9367159.
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