Patent ID: 8236529

Claim:
A vector for producing a fusion protein, encoded by a polynucleotide sequence, comprising: a promoter; a first polynucleotide operably linked to the promoter and encodes a chitin-binding-protein (CBP); a second polynucleotide operably linked to the first polynucleotide and encodes a linker, which upon expression produces a peptide having an amino acid sequence selected from the group consisting of SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3 and SEQ ID NO: 4, and the peptide being auto-cleavaging under pH value between about 5.5 to about 7.5 without subjecting to a protease treatment; and a third polynucleotide operably linked to the second polynucleotide and encodes a target protein.