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1 phosphatidylinositol 4 phosphate 5 kinase

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EC number
  
2.7.1.68

IntEnz
  
IntEnz view

ExPASy
  
NiceZyme view

CAS number
  
104645-76-3

BRENDA
  
BRENDA entry

KEGG
  
KEGG entry

In enzymology, a 1-phosphatidylinositol-4-phosphate 5-kinase (EC 2.7.1.68) is an enzyme that catalyzes the chemical reaction

ATP + 1-phosphatidyl-1D-myo-inositol 4-phosphate ADP + 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate

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 actin cytoskeleton.

Structural studies

As of late 2007, two structures have been solved for this class of enzymes, with PDB accession codes 1BO1 and 2GK9.

References

1-phosphatidylinositol-4-phosphate 5-kinase Wikipedia


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