Figure 5From: A new chymotrypsin-like serine protease involved in dietary protein digestion in a primitive animal, Scorpio maurus: purification and biochemical characterizationEffect of ions. Effect of increasing Ca2+ (black square), Cu2+ (black diamond), Zn2+ (black triangle) and Hg2+ (white square) ions concentrations on the SCP activity using casein as substrate; the star symbol indicates the value of protease activity measured in presence of 10 mM EDTA. SCP activity was measured at 50°C and at pH 9.Back to article page