Biology:Phosphatidylinositol-3,4,5-trisphosphate 5-phosphatase

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Phosphatidylinositol-3,4,5-trisphosphate 5-phosphatase
Identifiers
EC number3.1.3.86
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

Phosphatidylinositol-3,4,5-trisphosphate 5-phosphatase (EC 3.1.3.86, SHIP, p150Ship) is an enzyme with systematic name 1-phosphatidyl-1D-myo-inositol-3,4,5-trisphosphate 5-phosphohydrolase,[1][2][3][4][5] that has two isoforms: SHIP1 (produced by the gene INPP5D) and SHIP2 (INPPL1).

This enzyme catalyses the following chemical reaction

1-phosphatidyl-1D-myo-inositol 3,4,5-trisphosphate + H2O [math]\displaystyle{ \rightleftharpoons }[/math]
1-phosphatidyl-1D-myo-inositol 3,4-bisphosphate + phosphate

This enzyme hydrolyses 1-phosphatidyl-1D-myo-inositol 3,4,5-trisphosphate (PtdIns(3,4,5)P3) to produce PtdIns(3,4)P2.

References

  1. "p150Ship, a signal transduction molecule with inositol polyphosphate-5-phosphatase activity". Genes & Development 10 (9): 1084–95. May 1996. doi:10.1101/gad.10.9.1084. PMID 8654924. 
  2. "The 145-kDa protein induced to associate with Shc by multiple cytokines is an inositol tetraphosphate and phosphatidylinositol 3,4,5-triphosphate 5-phosphatase". Proceedings of the National Academy of Sciences of the United States of America 93 (4): 1689–93. February 1996. doi:10.1073/pnas.93.4.1689. PMID 8643691. 
  3. "Tyrosine phosphorylation and relocation of SHIP are integrin-mediated in thrombin-stimulated human blood platelets". The Journal of Biological Chemistry 272 (43): 26857–63. October 1997. doi:10.1074/jbc.272.43.26857. PMID 9341117. 
  4. "Cloning and expression of a human placenta inositol 1,3,4,5-tetrakisphosphate and phosphatidylinositol 3,4,5-trisphosphate 5-phosphatase". Biochemical and Biophysical Research Communications 225 (1): 243–9. August 1996. doi:10.1006/bbrc.1996.1161. PMID 8769125. 
  5. "The SH2 domain containing inositol 5-phosphatase SHIP2 displays phosphatidylinositol 3,4,5-trisphosphate and inositol 1,3,4,5-tetrakisphosphate 5-phosphatase activity". FEBS Letters 437 (3): 301–3. October 1998. doi:10.1016/S0014-5793(98)01255-1. PMID 9824312. 

External links