Synaptojanin-1 (SYNJ1)

Phosphatase that acts on various phosphoinositides, including phosphatidylinositol 4-phosphate, phosphatidylinositol (4,5)-bisphosphate and phosphatidylinositol (3,4,5)-trisphosphate (PubMed:27435091). Has a role in clathrin-mediated endocytosis (By similarity).

Hydrolyzes PIP2 bound to actin regulatory proteins causing the rearrangement of actin filaments downstream of tyrosine kinase and ASH/GRB2 (By similarity). .