Has phosphatase activity toward Ins(1,4,5)P3 and Ins(1,3,4,5)P4. Seems to be involved in the abscisic acid (ABA) signaling pathway (PubMed:11340187). Could also be able to hydrolyze PtdIns(4,5)P2 and PtdIns(3,4,5)P3 (PubMed:23658066). 1D-myo-inositol 1,4,5-trisphosphate + H2O = 1D-myo-inositol 1,4-bisphosphate + phosphate 1D-myo-inositol 1,3,4,5-tetrakisphosphate + H2O = 1D-myo-inositol 1,3,4-trisphosphate + phosphate Expressed ubiquitously. No visible phenotype (PubMed:23658066). Alterations in germination and in early seedling growth. Enhanced sensibility to abscisic acid (ABA) with elevated levels of Ins(1,4,5)P3 (PubMed:17237190). Belongs to the inositol polyphosphate 5-phosphatase family.