3.4.22.53	5	9	25°C, 30 min, stable in presence of 20 mM 2-mercaptoethanol	644031	
3.4.22.53	5.5	-	25°C, 30 min, about 30% loss of activity	644031	
3.4.22.53	6.5	7.5	25°C, 30 min, stable in presence of 6 mM 2-mercaptoethanol	644031	
3.4.22.53	8.5	-	25°C, 30 min, about 50% loss of activity	644031