These polypeptides have an amino acid sequence which has at least 70% identity to either of three phytases derived from the bacterium Buttiauxella, and which comprises at least one of {HEAD ~ the following amino acids} at {TAIL ~ the position} indicated: 119N, 120L, and 121E. These phytases have an improved specific activity 
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These polypeptides have an amino acid sequence which has at least 70 % identity to either of three phytases derived from the bacterium Buttiauxella , and which comprises at least one of { HEAD ~ the following amino acids } at { TAIL ~ the position } indicated : 119N , 120L , and 121E. These phytases have an improved specific activity
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH