3.5.1.38 37 - stable within 16 h between pH 4-10 209101 3.5.1.38 40 - 30 min, about 10% loss of activity 687356 3.5.1.38 50 - 30 min, about 40% loss of activity 687356 3.5.1.38 50 - half-life: 10 min, protection against thermal inactivation by addition of substrate 209097 3.5.1.38 51 - asparaginase B, half-life: 10 min 209098 3.5.1.38 57.5 - melting temperature 753129 3.5.1.38 60 - 30 min, about 70% loss of activity 687356 3.5.1.38 60 - incubation at 60°C in the absence of substrate for 20 min causes a 70% increase in activity 687356