2.4.2.9 4 10 over 60% of maximal activity within this range, profile overview 758849 2.4.2.9 5.5 8 pH 3.8: no activity, pH 5.5: optimum, pH 8: about 20% of maximal activity 658679 2.4.2.9 5.5 8.5 - 638368 2.4.2.9 5.8 7 pH 5.8: about 55% of maximal activity, pH 7.0: about 45% of maximal activity 678368 2.4.2.9 6.5 10 - 638365 2.4.2.9 7.2 8 pH 7.2: about 50% of activity maximum, pH 8.0: about 70% of activity maximum 638363 2.4.2.9 7.5 8.5 more than 90% activity between 7.5 and 8.5 with sharp drops in activity 0.5 pH units outside this range 736431