Advances in Gene Engineering of Phytase

Phytases are enzymes capable of hydrolyzing phytic acid (or phytate)to lessphosphorylated myoinositol derivates and inorganic phosphate. The addition of phytase to feed and food can resolve the antinutrition of phytic acid and increase the bioavailablity of protein and minerals. The progresses in the recent studies related to the biologic characterizations, the structure of its gene , and the gene engineering of phytase was reviewed.