Enables phosphatidylinositol-3-phosphate binding activity; phosphatidylinositol-4-phosphate binding activity; and phosphatidylinositol-5-phosphate binding activity. Involved in endosome organization; positive regulation of autophagy; and protein localization to plasma membrane. Located in lysosome. Colocalizes with endosome. [provided by Alliance of Genome Resources, Apr 2022]