Pyroglutamyl peptidase and its gene

DNA selected from the group consisting of the following (a) to (c):

• (a) DNA comprising a nucleotide sequence shown in SEQ ID NO:
• 1,
• (b) DNA comprising a nucleotide sequence shown in SEQ ID NO:
• 5, and
• (c) DNA which hybridizes with DNA comprising a nucleotide sequence complementary to the nucleotide sequence shown in SEQ ID NO:
• 1 or 5 under stringent conditions, and comprises a nucleotide sequence encoding a polypeptide having a pyroglutamyl peptidase activity.

DNA selected from the group consisting of the following (a) to (c):

• (a) DNA comprising a nucleotide sequence shown in SEQ ID NO:
• 3,
• (b) DNA which comprises a partial sequence of the nucleotide sequence shown in SEQ ID NO:
• 3 consisting of 100 or more nucleotides and functions as a promoter, and
• (c) DNA which hybridizes with DNA comprising a nucleotide sequence complementary to the nucleotide sequence shown in SEQ ID NO:
• 3 under stringent conditions and functions as a promoter.

DNA selected from the group consisting of the following (a) to (c):

• (a) DNA comprising a nucleotide sequence complementary to a nucleotide sequence shown in SEQ ID NO:
• 4,
• (b) DNA which comprises a partial sequence of a nucleotide sequence complementary to the nucleotide sequence shown in SEQ ID NO:
• 4 consisting of 15 or more nucleotides, and
• (c) DNA which hybridizes with DNA comprising the nucleotide sequence shown in SEQ ID NO:
• 4 under stringent conditions.