Term Name:	phosphatidylinositol-3,4-bisphosphate 3-phosphatase activity
Synonyms:	PTEN activity
Definition:	Catalysis of the reaction: 1-phosphatidyl-1D-myo-inositol 3,4-bisphosphate + H2O = 1-phosphatidyl-1D-myo-inositol 4-phosphate + phosphate.
Ontology:	GO: Molecular Function [GO:0051800]    QuickGO    AmiGO