text: PIP5K1B encodes phosphatidylinositol 4-phosphate 5-kinase β type I (<< pip5k1β >>), an enzyme functionally linked to actin cytoskeleton dynamics that phosphorylates phosphatidylinositol 4-phosphate [[[ PI(4)P ]]] to generate phosphatidylinositol-4,5-bisphosphate [PI(4,5)P2].