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