Phosphorylcholine Phosphatase: A Peculiar Enzyme of Pseudomonas aeruginosa

Figure 2

Effect of pH on PchP activity in the presence of 10 mM Mg²⁺ (open circle) or 0.06 mM Zn²⁺ (filled circle). The buffers used were 100 mM HAc/NaAc, pH 5.0, 100 mM HAc/KAc, pH 6.0, 50 mM Hepes/NaOH, pH 6.8, and 50 mM Hepes/NaOH, pH 7.4. Insert shows the coordination sphere for each metal.