3.4.23.12	1.5	4	the recombinant isoform NepI retains about 45%, 80%, 99%, 85% and 55% activity after 7 days at pH 1.5, 2.0, 3.0 and 4.0, respectively	
3.4.23.12	1.5	4	the recombinant isoform NepII retains about 65%, 90%, 100%, 65% and 30% activity after 7 days at pH 1.5, 2.0, 3.0 and 4.0, respectively	
3.4.23.12	2.9	-	at pH 2.9 at 37°C, activity decreased very slowly on longer incubation, about 60% and 30% of the original activity are retained after 30 days and 65 days, respectively	
3.4.23.12	3	9	40°C, highest stability at pH 3.0-9.0	
3.4.23.12	3	10	when nepenthesin I is incubated at pH 3.0 at 60°C for 30 days, about 30% of the original activity remains. When incubated at pH 3.0-10.0 at 37°C for 30 days, the enzyme retains 80% or more of activity	
3.4.23.12	5	-	60°C, highest stability at pH 5