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EC 3.1.3.36 Details
EC number
3.1.3.36
Accepted name
phosphoinositide 5-phosphatase
Reaction
1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate + H2O = 1-phosphatidyl-1D-myo-inositol 4-phosphate + phosphate
Other name(s)
type II inositol polyphosphate 5-phosphatase, triphosphoinositide phosphatase, IP3 phosphatase, PtdIns(4,5)P2 phosphatase, triphosphoinositide phosphomonoesterase, diphosphoinositide phosphatase, inositol 1,4,5-triphosphate 5-phosphomonoesterase, inositol triphosphate 5-phosphomonoesterase, phosphatidylinositol-bisphosphatase, phosphatidyl-myo-inositol-4,5-bisphosphate phosphatase, phosphatidylinositol 4,5-bisphosphate phosphatase, polyphosphoinositol lipid 5-phosphatase, phosphatidyl-inositol-bisphosphate phosphatase
Systematic name
phosphatidyl-myo-inositol-4,5-bisphosphate 4-phosphohydrolase
CAS registry number
9036-01-5
Comment
These enzymes can also remove the 5-phosphate from Ins(1,4,5)P3 and/or Ins(1,3,4,5)P4. They are a diverse family of enzymes, with differing abilities to catalyse two or more of the four reactions listed. They are thought to use inositol lipids rather than inositol phosphates as substrates in vivo. All of them can use either or both of PtdIns(4,5)P2 and PtdIns(3,4,5)P3 as substrates; this is the main property that distinguishes them from EC 3.1.3.56, inositol-polyphosphate 5-phosphatase.
History
created 1972, modified 2002
EC Tree
3.1.3.30 created 1972, deleted 1992
3.1.3.61 created 1992, deleted 2002
3.1.3.65 created 1992, deleted 2002