Prescission™ protease - 2000 units/ml in 50 mM Tris-HCl, 150 mM NaCl, 10mM EDTA, 1 mM DTT and 20 % glycérol)

GST fusion protein cleavage enzyme

Used for site-specific separation of the GST tag from proteins:
• expressed using pGEX-T vectors: Thrombin Protease;
• expressed using pGEX-X vectors: Facto Xa Protease;
• expressed using pGEX-6P vectors: PreScission™ Protease.

PreScission Protease: one unit will cleave >90 % of 100 µg of a test GST-fusion protein in 50 mm Tris-HCl, 150 mm NaCl, 1 mm EDTA, 1 mm DTT, pH 7.0 at 5 °C for 16 h.
Thrombin Protease: one unit of enzyme cleaves 90% of 100 µg of a test GST fusion protein when incubated in 1 × PBS at 22 °C for 16 h
Factor Xa Protease: one unit cleaves >90 % of 100 µg of a test GST fusion protein when incubated in 1 mm CaCl₂, 100 mm NaCl, and 50 mm Tris-HCl (pH 8.0) at 22 °C for 16 h.