5.3.1.14 5 7.5 more than 60% of maximum activity 749202 5.3.1.14 5 11 pH-range of optimal activity, immobilized enzyme 2632 5.3.1.14 6 10 pH 6: about 65% of maximal activity, pH 9.5: about 80% of maximal activity, pH 10.0: about 15% of maximal activity 2626 5.3.1.14 6 10 the optimum pH for isomerization is pH 7.0, with 75%, 85%, 92%, and 90% of maximum activity at pH 6.0, 8.0, 9.0 and 10.0, respectively 713898 5.3.1.14 7 11 pH 7: about 50% of maximal activity, pH 11: about 40% of maximal activity, free enzyme 2632 5.3.1.14 8 - - 714573 5.3.1.14 8 - more than 60% loss of activity above 749202 5.3.1.14 9 - - 660751