1.13.99.1	4.5	10	almost no activity at pH 4.5, approx. 10% of maximal ativity at pH 10.0, approx. 70% of maximal activity at pH 8.0, i.e. a second optima	
1.13.99.1	6.5	7.4	sharp decrease of activity below pH 6.5 and above pH 7.4	
1.13.99.1	7	8.5	the enzyme keeps more than 70% of the highest activity at a range from pH 7.0-8.5. When the pH is lower than 6.0, the activity decreases rapidly	
1.13.99.1	7	8.5	the enzyme shows high activity (more than 70%) across the pH range from 7.5-8.5	
1.13.99.1	7.5	8.5	the enzyme shows high activity (more than 70%) across the pH range from 7.5-8.5