1.11.1.11 6 8 - 724680 1.11.1.11 7 - 25% of maximum activity 743788 1.11.1.11 4 - 80% of maximum activity 743788 1.11.1.11 5 7.8 activity 35 units mg-1 protein min-1 at pH 5.0 and pH 7.8 699802 1.11.1.11 4.5 9.5 activity range, profile overview 764383 1.11.1.11 5 8 both forms of the enzyme 439856 1.11.1.11 6 7.9 maximum activity maintained 439858 1.11.1.11 4 8 over 20% of maximal activity within this range, cell-free enzyme extract, profile overview. Over 50% of maximal activity at pH 6.0-7.5 764715 1.11.1.11 5.5 9 over 30% of maximal activity within this range, profile overview 764871 1.11.1.11 5 9 pH 5.0: 68% of maximal activity, pH 9.0: 23% of maximal activity 688913 1.11.1.11 5 7.5 pH 5: about 50% of maximal activity, pH 7.5: about 50% of maximal activity 689240 1.11.1.11 5 8 the activity of APX decreases rapidly at pH above 8.0 713299