Figure 2.

Initial velocities for the reaction between oxyhemoglobin and peroxynitrite as a function of peroxynitrite concentration. The reactions were conducted at 25°C in 100 mM phosphate buffer, pH 7.4/0.1 mM dtpa with 25 μM oxyhemoglobin. (Inset) Dependence of the determined second-order rate constant on pH.