3.4.23.1	30	-	isoforms P-II and P-III	753464	
3.4.23.1	30	37	-	755425	
3.4.23.1	35	-	-	717514	
3.4.23.1	37	-	-	36766, 679796	
3.4.23.1	37	-	assay at	35005, 35010, 36746	
3.4.23.1	40	-	isoform P-I	753464	
3.4.23.1	40	-	isoform PG2-2	753325	
3.4.23.1	40	-	the activity of pepsin isoform 1 is largely lost at higher than 50°C	717613	
3.4.23.1	42	-	assay at	35010	
3.4.23.1	42	50	maximum activity is observed at temperatures between 42 and 50°C, decreasing so drastically above 50°C that complete loss of activity is detected at 60°C	717595