Effects of cadmium and zinc ions on purified lamb kidney cortex glucose-6-phosphate dehydrogenase activity

Figures & data

Figure 1 Inhibition of lamb kidney cortex glucose-6-phosphate dehydrogenase by zinc. The velocities were determined in 100 mM Tris/HCl buffer pH 8.0.

Figure 2 Lineweaver-Burk double reciprocal plot of initial velocity against G-6-P as varied substrate and Zn ²⁺(1.0–2.0 mM) as inhibitor at different fixed NADP⁺(0.1 mM).

Figure 3 Lineweaver-Burk double reciprocal plot of initial velocity against NADP⁺ as varied substrate and Zn²⁺(1.0–2.0 mM) as inhibitor at different fixed G-6-P (0.4 mM) concentrations. The velocities were determined in 100 mM Tris/HCl buffer pH 8.0.

Figure 4 Inhibition of lamb kidney cortex glucose-6-phosphate dehydrogenase by cadmium. The velocities were determined in 100 mM Tris/HCl buffer pH 8.0.

Figure 5 Lineweaver-Burk double reciprocal plot of initial velocity against G-6-P as varied substrate and Cd ²⁺(1.5–3.0 mM) as inhibitor at different fixed NADP⁺(0.1 mM) concentrations. The velocities were determined in 100 mM Tris/HCl buffer pH 8.0.

Figure 6 Lineweaver-Burk double reciprocal plot of initial velocity against NADP⁺ as varied substrate and Cd ²⁺(1.5–3.0 mM) as inhibitor at different fixed G-6-P (0.4 mM) concentrations. The velocities were determined in 100 mM Tris/HCl buffer pH 8.0.