Inositol polyphosphate 5-phosphatase K (Inpp5k)

Inositol 5-phosphatase which functions on inositol 1,4,5- trisphosphate, inositol 1,3,4,5-tetrakisphosphate, phosphatidylinositol 4,5-bisphosphate and phosphatidylinositol 3,4,5-trisphosphate. Has 6-fold higher affinity for phosphatidylinositol 4,5-bisphosphate compared to inositol 1,4,5- trisphosphate (By similarity).

Negatively regulates assembly of the actin cytoskeleton. Controls insulin-dependent glucose uptake among inositol 3,4,5-trisphosphate phosphatases; consequently, is the specific regulator for insulin signaling in skeletal muscle (PubMed:22247557, PubMed:22751929).