1.1.1.72	4	30	stable between	711743	
1.1.1.72	45	-	the half-life of 25 min increases to 45 min upon addition of 400 mM glycerol	287285	
1.1.1.72	50	-	5 min, 98% loss of activity	287285	
1.1.1.72	50	-	rapid inactivation occurs	711743