GO:0016316

phosphatidylinositol-3,4-bisphosphate 4-phosphatase activity

Details: 
Catalysis of the reaction: 1-phosphatidyl-myo-inositol 3,4-bisphosphate + H2O = 1-phosphatidyl-1D-myo-inositol 3-phosphate + phosphate. [EC:3.1.3.66, GOC:hb]
Evidence Code: