Enables phosphatidylinositol binding activity and phosphatidylinositol-3,4-bisphosphate binding activity. Predicted to be involved in heart development. Predicted to act upstream of or within inositol lipid-mediated signaling. Located in membrane and mitochondrial envelope. Orthologous to human ADAP2 (ArfGAP with dual PH domains 2). [provided by Alliance of Genome Resources, Apr 2022]