Figure 5.

Determination of the effects of the divalentcations. Determination of the effects of the divalent cations Mg²⁺ (blue), Ca²⁺ (green) and Zn²⁺ (yellow) (A) and Mn²⁺ (red) and the Ni²⁺ (black) (B) on the enzymatic activity of the β-galactosidase hybrid between K. lactis and A. niger (circles) and the native β-galactosidase of K. lactis (square). Experimental variations are less than 10% of the value of the point. Results are the average of two independent experiments.