Fig. 1

Effect of pH and temperature on the activity and stability of purified recombinant TlGa15B and mutants TlGa15B-GA1 and TlGa15B-GA2. a Effect of pH on the activity at 37 ℃. b Effect of pH on the stability at 37 ℃. c Effect of temperature (20–90 ℃) on the activity. d Effect of temperature (75 ℃) on the stability