Patent ID: 8735107

Claim:
A method for deaminating a phenylalanine, tyrosine, or a histidine comprising the following steps: (a) providing a polypeptide having at least 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, or more, or 100% sequence identity to SEQ ID NO 32, or a fragment thereof, or a polypeptide encoded by a nucleic acid having at least 85%, 86%, 87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, or more, or 100% sequence identity to SEQ ID NO 31; (b) providing a composition comprising a phenylalanine, tyrosine, or a histidine residue; and (c) contacting the polypeptide or the fragment thereof of step (a) with the composition of step (b) under conditions wherein the polypeptide or the fragment thereof deaminates the phenylalanine, tyrosine, or a histidine residue in the composition; wherein the polypeptide or the fragment thereof has lyase activity.