Protocol for use with Enterokinase, light chain (P8070)

Optimal incubation times and enzyme concentrations must be determined empirically for a particular substrate. Typical reaction conditions are as follows:

1. Combine 25ug of sample with reaction buffer and H₂O (if necessary) to a total reaction volume of 20uL
   * Recommended Reaction Buffer:  20 mM Tris-HCl, 50 mM NaCl, 2 mM CaCl2 (pH 8.0)
2. Add 1uL of Enterokinase light chain
3. Incubate at @ 25°C for 16 hours
    
   Notes: Enterokinase is inhibited by high salt concentrations. For optimal activity NaCl concentration should be 100mM or less. The pH of the buffer should be between 6 and 9. The enzyme requires 2 mM Calcium for activity.