1-phosphatidylinositol-4-phosphate 5-kinase | |||||||||
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Identifiers | |||||||||
EC no. | 2.7.1.68 | ||||||||
CAS no. | 104645-76-3 | ||||||||
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, 1-phosphatidylinositol-4-phosphate 5-kinase (EC 2.7.1.68) is an enzyme that catalyzes the chemical reaction
Thus, the two substrates of this enzyme are ATP and 1-phosphatidyl-1D-myo-inositol 4-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-4-phosphate 5-phosphotransferase. Other names in common use include diphosphoinositide kinase, PIP kinase, phosphatidylinositol 4-phosphate kinase, phosphatidylinositol-4-phosphate 5-kinase, and type I PIP kinase. This enzyme participates in 3 metabolic pathways: inositol phosphate metabolism, phosphatidylinositol signaling system, and regulation of the actin cytoskeleton.
As of late 2007, two structures have been solved for this class of enzymes, with PDB accession codes 1BO1 and 2GK9.
Phosphatidylinositol consists of a family of lipids made of a phosphate group, two fatty acid chains, and one inositol molecule. They represent a class of the phosphatidylglycerides. Typically phosphatidylinositols form a minor component on the cytosolic side of eukaryotic cell membranes. The phosphate group gives the molecules a negative charge at physiological pH.
Phosphoinositide phospholipase C is a family of eukaryotic intracellular enzymes that play an important role in signal transduction processes. These enzymes belong to a larger superfamily of Phospholipase C. Other families of phospholipase C enzymes have been identified in bacteria and trypanosomes. Phospholipases C are phosphodiesterases.
The enzyme phosphatidylinositol-3,4,5-trisphosphate 3-phosphatase (EC 3.1.3.67) catalyzes the chemical reaction
The enzyme phosphatidylinositol-3,4-bisphosphate 4-phosphatase (EC 3.1.3.66) that catalyzes the reaction
The enzyme phosphatidylinositol-3-phosphatase (EC 3.1.3.64) catalyzes the reaction
The enzyme phosphoinositide 5-phosphatase (EC 3.1.3.36) catalyzes the reaction
In enzymology, a 1-phosphatidylinositol-3-phosphate 5-kinase is an enzyme that catalyzes the chemical reaction
In enzymology, a 1-phosphatidylinositol 4-kinase is an enzyme that catalyzes the chemical reaction
In enzymology, a 1-phosphatidylinositol-5-phosphate 4-kinase is an enzyme that catalyzes the chemical reaction
In enzymology, a CDP-diacylglycerol—inositol 3-phosphatidyltransferase is an enzyme that catalyzes the chemical reaction
In enzymology, a diphosphoinositol-pentakisphosphate kinase is an enzyme that catalyzes the chemical reaction
In enzymology, an inositol 3-kinase is an enzyme that catalyzes the chemical reaction
In enzymology, an inositol-pentakisphosphate 2-kinase is an enzyme that catalyzes the chemical reaction
In enzymology, an inositol-tetrakisphosphate 1-kinase is an enzyme that catalyzes the chemical reaction
In enzymology, an inositol-tetrakisphosphate 5-kinase is an enzyme that catalyzes the chemical reaction
In enzymology, a phosphatidylinositol-4,5-bisphosphate 3-kinase is an enzyme that catalyzes the chemical reaction:
In enzymology, a phosphatidylinositol-4-phosphate 3-kinase is an enzyme that catalyzes the chemical reaction
Bisphosphate may refer to:
Phosphatidylinositol-4,5-bisphosphate 4-phosphatase (EC 3.1.3.78, phosphatidylinositol-4,5-bisphosphate 4-phosphatase I, phosphatidylinositol-4,5-bisphosphate 4-phosphatase II, type I PtdIns-4,5-P2 4-Ptase, type II PtdIns-4,5-P2 4-Ptase, IpgD, PtdIns-4,5-P2 4-phosphatase type I, PtdIns-4,5-P2 4-phosphatase type II, type I phosphatidylinositol-4,5-bisphosphate 4-phosphatase, type 1 4-phosphatase) is an enzyme with systematic name 1-phosphatidyl-1D-myo-inositol-4,5-bisphosphate 4-phosphohydrolase. This enzyme catalyses the following chemical reaction
Phosphatidylinositol-4-phosphate 5-kinases are a class of enzymes that phosphorylate phosphatidylinositol 4-phosphate. They perform this reaction on the fifth hydroxyl of the myo-inositol ring to form phosphatidylinositol 4,5-bisphosphate.