241 human active and 13 inactive phosphatases in total;
194 phosphatases have substrate data;
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336 protein substrates;
83 non-protein substrates;
1215 dephosphorylation interactions;
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299 KEGG pathways;
876 Reactome pathways;
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last scientific update: 11 Mar, 2019
last maintenance update: 01 Sep, 2023
At the plasma membrane, subsequent phosphorylation of phosphatidylinositol 4-phosphate (PI4P) produces phosphatidylinositol 4,5-bisphosphate (PI(4,5)P2) and phosphatidylinositol 3,4,5-trisphosphate (PI(3,4,5)P3) while the actions of various other kinases and phosphatases produces phosphatidylinositol 3-phosphate (PI3P), phosphatidylinositol 5-phosphate (PI5P), phosphatidylinositol 3,4-bisphosphate (PI(3,4)P2), and phosphatidylinositol 3,5-bisphosphate (PI(3,5)P2) (Zhang et al. 1997, Gurung et al. 2003, Guo et al. 1999, Vanhaesebroeck et al. 1997, Tolias et al. 1998, Schaletzky et al. 2003, Kim et al. 2002, Clarke et al. 2010). Many of the phosphatidylinositol phosphatases that act at the plasma membrane belong to the myotubularin family. Enzymatically inactive myotubularin family members can heterodimerize with catalytically active mytotubularins to regulate their stability, activity and/or substrate specificity (Berger et al. 2006, Zou et al. 2012)