. "\"Catalysis of the reaction: 1-phosphatidyl-1D-myo-inositol + ATP = a 1-phosphatidyl-1D-myo-inositol 3-phosphate + ADP + 2 H(+).\" [EC:2.7.1.137, RHEA:12712]" . . "1-phosphatidylinositol-3-kinase activity" . "PI3K" . "1-phosphatidylinositol 3-kinase activity" . "ATP:1-phosphatidyl-1D-myo-inositol 3-phosphotransferase activity" . "PI3-kinase activity" . "PtdIns-3-kinase activity" . "EC:2.7.1.137" . "KEGG:R03362" . "MetaCyc:1-PHOSPHATIDYLINOSITOL-3-KINASE-RXN" . "RHEA:12712" . . . "Vps34p" . "phosphatidylinositol 3-kinase, class I, catalyst activity" . "phosphatidylinositol 3-kinase activity, class I" . "phosphatidylinositol 3-kinase activity, class II" . "phosphatidylinositol 3-kinase activity, class III" . "type I phosphatidylinositol kinase activity" . "type III phosphoinositide 3-kinase activity" .