The catalytic function of most enzymes is a sensitive function of pH. A plot (activity vs pH) of the data given below will clearly illustrate the degree of this sensitivity. What is the optimum pH for this enzyme?
U of enzyme activity 24.8 33.0 66.7 56.2 42.3 27.5
pH 7.2 7.6 8. 0 8.6 8.8 9.0