3.4.19.3	2.4	-	at acidic pH the mutant enzymes C142S/C188S/E192A, C142S/C188S/E192I, C142S/C188S/E192V, C142S/C188S/E192D and C142S/C188S/E192Q are less stable than cysteine-free mutant C142S/C188S	667733	
3.4.19.3	4	9.2	rapid inactivation below pH 4.0 and above pH 9.2	95299	
3.4.19.3	7	8	30°C, 30 min, stable in presence of 5 mM each of EDTA and 2-mercaptoethanol	95283	
3.4.19.3	7	8	30°C, stable in presence of 5 mM EDTA and 2-mercaptoethanol	95290	
3.4.19.3	7	8	stable in presence of 5 mM EDTA and 5 mM 2-mercaptoethanol	95280	
3.4.19.3	7	8.2	stable	95283	
3.4.19.3	10.5	-	at alkaline pH the mutant enzyme enzymes C142S/C188S/E192A, C142S/C188S/E192I, C142S/C188S/E192V and C142S/C188S/E192Q are more stable than cysteine-free mutant C142S/C188S	667733