3.4.22.59 additional information - caspase-6 activity is optimal around neutral pH and is almost entirely lost at pH 5.0 and below 3.4.22.59 7 7.5 reaction with acetyl-VEHD-7-amido-4-methylcoumarin 3.4.22.59 7.2 - assay at 3.4.22.59 7.4 - - 3.4.22.59 7.4 - assay at 3.4.22.59 7.5 - assay at