5.3.1.15	4.9	7	pH 4.0: about 50% of maximal activity, pH 7.0: maximal activity	2638, 2639	
5.3.1.15	5	8	more than 50% of maximum activity	749201	
5.3.1.15	7	8.5	at pH 7.0 and 8.5, the activities are approximately 60% of the maximum	715675