GO:0051800

phosphatidylinositol-3,4-bisphosphate 3-phosphatase activity

Details: 
Catalysis of the reaction: phosphatidylinositol-3,4-bisphosphate + H2O = phosphatidylinositol-4-phosphate + phosphate. [GOC:bf, PMID:9811831]
Evidence Code: 
IEA