2.7.4.13	37	-	60 min, stable	642544	
2.7.4.13	42	-	10% loss of activity after 30 min	642544	
2.7.4.13	47	-	50% loss of activity after 30 min	642544	
2.7.4.13	52	-	rapid inactivation, t1/2: 5 min	642544