4.2.2.7 15 - 30 min, stable 681056 4.2.2.7 28 - purified native enzyme, catalytic activity after about 72 h shows a loss of 40.4% in activity 713782 4.2.2.7 30 40 - 746759 4.2.2.7 35 - 30 min, rapid inactivation at 35°C or above 681056 4.2.2.7 40 - rapid loss of activity above, more than 25% loss of activity after 20 min 5972 4.2.2.7 45 - 1 h, 20% residual activity 746759 4.2.2.7 45 - completely inactivated after 5 min 5973 4.2.2.7 50 - 60% of the maximal activity retained after 1h 650632, 650636 4.2.2.7 55 - 30 min, nearly complete inactivation 681056 4.2.2.7 55 - inactivation 650632 4.2.2.7 55 - melting temperature 746759 4.2.2.7 60 - melting temperature, presence of 10 mM Mg2+ 746759