Figure 5.
Exponential growth deduced from the initial rate of reaction as a function of the starting concentration of enzyme. Reactions were carried out using either 5 (gray) or 10 (black) μM substrates. Initial velocity was measured over the first 10% of the reaction, and the data were fit to an equation with reaction order 1.0. Reaction conditions: 25 mM MgCl2, pH 8.5, 48 °C.