Is predicted to encode a protein with the following domains: FATC domain; Phosphatidylinositol 3-/4-kinase, catalytic domain superfamily; Phosphatidylinositol 3-/4-kinase, catalytic domain; Protein kinase-like domain superfamily; and Phosphatidylinositol 3- and 4-kinase. Is an ortholog of C. elegans atm-1 and smg-1. In C. elegans, atm-1 is involved in response to ionizing radiation.