Patent ID: 7556936

Claim:
An isolated polypeptide having proteolytic activity and capable of cleaving a polypeptide comprising the amino acid sequence of SEQ ID NO:6, wherein said polypeptide has an amino acid sequence selected from the group consisting of: (a) the amino acid sequence set forth in SEQ ID NO:2 or 4; (b) an amino acid sequence having at least 95% sequence identity to the amino acid sequence set forth in SEQ ID NO:2 or 4; (c) an amino acid sequence encoded by the nucleotide sequence set forth in SEQ ID NO:1 or 3; and (d) an amino acid sequence encoded by a nucleotide sequence capable of hybridizing to the nucleotide sequence set forth in SEQ ID NO:1 or SEQ ID NO:3 in 50% formamide, 1 M NaC1, 1% SDS at 37° C. for at least 12 hours with a final wash in 0.1×SSC at 65° C. for at least 20 minutes.