3.5.99.7	6.5	-	no activity below	667784	
3.5.99.7	7.5	9.5	pH 7.5: about 45% of maximal activity, pH 9.5: 20% of maximal activity	648257	
3.5.99.7	7.5	9.7	about 65% of maximal activity at pH 7.5 and at pH 9.7	648247