a 1,2-diacyl-sn-glycero-3-phospho-(1D-myo-inositol-5-phosphate) + H2O <=> a 1,2-diacyl-sn-glycero-3-phospho-(1D-myo-inositol) + phosphate
a 1,2-diacyl-sn-glycero-3-phospho-(1d-myo-inositol-5-phosphate) + h2o <=> a 1,2-diacyl-sn-glycero-3-phospho-(1d-myo-inositol) + phosphate