4.3.1.19	additional information	-	the enzyme is highly active in an alkaline pH range, little or no activity is observed at pH values below 6.0	682413	
4.3.1.19	6.8	8.9	pH has no significant effect on activity	747154	
4.3.1.19	7	8	65% of maximal activity at pH 7 and at pH 8	210839	
4.3.1.19	7.5	9.5	activity increases from pH 7.5 to pH 9.5	210852	
4.3.1.19	7.5	9.5	pH 7.5: about 55% of maximal activity, pH 9.5: about 85% of maximal activity	210845	
4.3.1.19	8.1	9.6	50% of maximal activity at pH 8.1 and 9.6	210821	
4.3.1.19	8.5	11	pH 8.5: about 30% of maximal activity, pH 11.0: about 70% of maximal activity, with L-Thr as substrate	210824