Summary: NOW INCLUDES BOTH COLORIMETRIC AND FLUOROGENIC SUBSTRATES! This kit is a complete assay system to measure protease activity of recombinant caspase-1. Cleavage of a tetrapeptide substrate is monitored colorimetrically at 405 nm or fluorimetrically (Ex. 360 nm/Em. 460 nm). Assays are performed in a convenient 96-well plate format.