ID 3.1.3.26 DE 4-phytase. AN 6-phytase (name based on 1L-numbering system and not 1D-numbering). AN phytase. AN phytate 6-phosphatase. CA 1D-myo-inositol hexakisphosphate + H2O = 1D-myo-inositol 1,2,3,5,6- CA pentakisphosphate + phosphate. //