PIKfyve is a phosphoinositide kinase (PIK) that contains a FYVE-type zinc finger domain, which binds phosphatidylinositol 3-phosphate (PI3P). PIKfyve phosphorylates PI3P to produce PI-(3,5)-P2, which is involved in cellular processes including membrane trafficking and cytoskeletal reorganization. YM-201636 is a cell-permeable and selective inhibitor of PIKfyve (IC50 = 33 nM). It reversibly impairs endosomal trafficking in NIH3T3 cells, mimicking the effect produced by depleting PIKfyve with siRNA. YM-201636 also blocks retroviral exit by budding from cells, apparently by interfering with the endosomal sorting complex required for transport (ESCRT) machinery. In adipocytes, YM-201636 also inhibits basal and insulin-activated 2-deoxyglucose uptake (IC50 = 54 nM).
![6-Amino-N-[3-[4-(4-morpholinyl)pyrido[3',2':4,5]furo[3,2-d]pyrimidin-2-yl]phenyl]-3-pyridinecarboxamide](https://www.chemicalbook.com/CAS2/GIF/371942-69-7.gif)
