The enzyme 5-phytase (EC 3.1.3.72) catalyzes the reactionmyo-inositol hexakisphosphate + H2O = 1L-myo-inositol 1,2,3,4,6-pentakisphosphate + phosphate
Prevalence
Of the hundreds of phytase enzymes that have been characterized in the literature, only two have been characterized as 5-phytases. A histidine acid phosphatases purified from lily pollen and a protein tyrosine phosphatase-like phytase from Selenomonas ruminantium subsp. lactilytica were both found to have specificity for the 5-phosphate position of myo-inositol hexakisphosphate. ==Structural studies==
Structural studies
As of late 2007, only the phytase purified from lily pollen had its structure solved, with PDB accession codes , , , , , and . == See also ==