Patent ID: 7601807

Claim:
An isolated or purified polypeptide which has a proteolytic activity of cutting at a Gly-Phe site or a Ser-Leu site of a peptide or protein, and which is selected from the group consisting of: (a) a polypeptide which is encoded by a polynucleotide having at least 95% sequence identity to nucleotides 253-816 of SEQ ID NO: 1, (b) a polypeptide which is encoded by a polynucleotide that hybridizes to the full complement of nucleotides 1-816 or to the full complement of nucleotides 253-816 of SEQ ID NO: 1 under stringent conditions defined by washing at 65° C. in 0.5×SSC, and (c) a polypeptide which comprises the amino acid sequence of SEQ ID NO: 2 or 3.