3.5.4.2	4	8	-	
3.5.4.2	5	8.5	pH 5: about 30% of maximal activity, pH 8.5: about 20% of maximal activity	
3.5.4.2	6	8	potassium phosphate buffer, maximal activity pH 7	
3.5.4.2	7	9	Tris-HCl buffer, maximal activity pH 9	
3.5.4.2	7.5	9	glycine-NaOH buffer, maximal activity pH 7