Phosphatase that specifically dephosphorylates phosphatidylinositol 3-phosphate (PtdIns(3)P) and inositol 1,3-bisphosphate (Ins(1,3)P2).
Subcellular locations: Cytoplasm, Endomembrane system
May partially localize to endosomes and/or the Golgi apparatus.
Expressed specifically in brain.