1.13.11.27	5	7	reaction rate is constant between pH 5 and pH 7	395367	
1.13.11.27	5.5	7.7	pH 5.5: about 50% of maximal activity, pH 7.7: about 55% of maximal activity	395398	
1.13.11.27	6	9.5	pH 6.0: about 55% of maximal activity, pH 9.5: about 50% of maximal activity	395375