The Enzyme Database

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EC 2.7.1.153     
Accepted name: phosphatidylinositol-4,5-bisphosphate 3-kinase
Reaction: ATP + 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate = ADP + 1-phosphatidyl-1D-myo-inositol 3,4,5-trisphosphate
For diagram of 1-phosphatidyl-myo-inositol metabolism (part 2), click here
Glossary: 1-phosphatidyl-1D-myo-inositol = PtdIns
1-phosphatidyl-1D-myo-inositol 3-phosphate = PtdIns3P
1-phosphatidyl-1D-myo-inositol 4-phosphate = PtdIns4P
1-phosphatidyl-1D-myo-inositol 3,4-bisphosphate = PtdIns(3,4)P2
1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate = PtdIns(4,5)P2
1-phosphatidyl-1D-myo-inositol 3,4,5-trisphosphate = PtdIns(3,4,5)P3
Other name(s): type I phosphoinositide 3-kinase
Systematic name: ATP:1-phosphatidyl-1D-myo-inositol-4,5-bisphosphate 3-phosphotransferase
Comments: This enzyme also catalyses the phosphorylation of PtdIns4P to PtdIns(3,4)P2, and of PtdIns to PtdIns3P. Four mammalian isoforms are known to exist.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 103843-30-7
References:
1.  Vanhaesebroeck, B., Leevers, S.J., Ahmadi, K., Timms, J., Katso, R., Driscoll, P.C., Woscholski, R., Parker, P.J. and Waterfield, M.D. Synthesis and function of 3-phosphorylated inositol lipids. Annu. Rev. Biochem. 70 (2001) 535–602. [PMID: 11395417]
[EC 2.7.1.153 created 2002]
 
 


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