2.4.1.83 30 - 20 min, complete inactivation, in presence of mitochondrial extract 40% loss of activity, stable for 30 min in presence of sphingomyelin and dolichyl phosphate 489439 2.4.1.83 40 - 20 min, 50% loss of activity in presence of sphingomyelin and dolichyl phosphate 489439 2.4.1.83 75 - protein shows thermostability up to 75°C 692257