The proFg- CatB3 cDNA was generated and subcloned into the pPICZA vector using the primer pairs 5-GCTGAAGCTGAATTCAAGCCAAACTAC-3 and 5-ATCTTGGTAGACGCGGCCGCAGGTAATCCGGC-3 containing the EcoRI and NotI restriction endonuclease sites (italics), respectively, using Platinum® Pfx DNA polymerase (Invitrogen) with the optimal conditions: 94 ◦C for 2 min, 30 cycles of 94 ◦C for 15 s, 55 ◦C for 30 s and 68 ◦C for 90 s, and finally at 68 ◦C for 10 min. The
sequence was confirmed by DNA sequence analysis