2.6.1.2 3.5 9.5 active over whole range 636721 2.6.1.2 5.5 8.2 native and recombinant enzyme 636733 2.6.1.2 5.5 9.5 approx. 70% of maximal activity at pH 5.5, approx. 50% of maximal activity at pH 9.5 636724 2.6.1.2 6.3 7.8 approx. 40% of maximal activity at pH 6.3, 75% of maximal activity at pH 6.8 636716 2.6.1.2 6.4 8.7 at least 50% of maximal activity at pH 6.4 and 8.7 636719 2.6.1.2 6.5 7.5 - 672286 2.6.1.2 6.5 8 almost full activity within this range 689878 2.6.1.2 7 7.5 rapid decrease of activity below pH 7 and above pH 7.5 636720 2.6.1.2 7 9 more than 70% of maximum activity 673585 2.6.1.2 7.9 8.4 highest activity 703680