1.1.1.71 additional information - thermal denaturation is fully irreversible and follows first-order kinetics 726699 1.1.1.71 4 60 the enzyme is thermally stable when incubated for 30 min between 4 and 40°C. Incubation for 30 min at temperatures between 10 and 30 °C slightly increases the catalytic activity. Recombinant enzyme is completely inactivated at 50 and 60°C 737536 1.1.1.71 8 25 the enzyme has a half-life of 80 h at 25°C and stability optimum between 8 and 15°C in the presence of 0.8 mM CaCl2 (half-life of 130 h) 740200 1.1.1.71 30 - no loss of activity after 15 min, complete loss of activity at 60°C 287280 1.1.1.71 41 - melting temperature T1/2 of wild-type enzyme ADHA 760769 1.1.1.71 48 - melting temperature T1/2 of mutant ADHA-0278 760769 1.1.1.71 53 - melting temperature T1/2 of mutant ADHA-0279 760769 1.1.1.71 65 - melting temperature T1/2 of mutant ADHA-0391 760769 1.1.1.71 66 - melting temperature T1/2 of mutant ADHA-0384 760769 1.1.1.71 67 - melting temperature T1/2 of mutant ADHA-0398 and of mutant ADHA-0381 760769 1.1.1.71 70 - 1.5 h, no loss of activity 726712 1.1.1.71 70 - 2 h, 10% loss of activity 726712 1.1.1.71 70 95 the enzyme activity is slightly decreased by 1 h incubation at 70°C (2.6%), 80°C (4.7%), 90°C (7.9%), and 95°C (18.8%), 50% loss of activity after approximately 6 h at 95°C 761529 1.1.1.71 80 - 1.5 h, no loss of activity 726712 1.1.1.71 80 - 2 h, 15% loss of activity 726712 1.1.1.71 80 - activity begins to decrease after 2 h preincubation. The rate of 2-propanol oxidation is decreased 34% and 58% over 24 h incubation at 80°C in the presence or absence of 1 M NaCl, respectively. Calculated half-life values of the enzyme in buffer with or without 1 M NaCl are 37 vs. 20 h at 80°C, respectively 726699 1.1.1.71 90 - activity begins to decrease after 30 min preincubation. The incubation at 90°C provokes 31% and 40% reduction of 2-propanol oxidation rate in the presence or absence of 1 M NaCl, respectively. Calculated half-life values of the enzyme in buffer with or without 1 M NaCl are 8 vs. 6 h at 90 °C, respectively 726699 1.1.1.71 90 - half-life 2 h 726712 1.1.1.71 90 - half-life: 2 h 726712 1.1.1.71 95 - the highly thermostable enzyme has a half-life of 4.5 h at 95°C and 16.2 h at 85°C 735486 1.1.1.71 100 - half-life 1 h 726712 1.1.1.71 100 - half-life: 1 h 726712 1.1.1.71 102 - Tm-value in presence of 1 M NaCl 726699 1.1.1.71 104 - Tm-value in absence of NaCl 726699