Fig. 5. pH-Dependence of the apparent rate constant for the reaction of methionine with HOCl. (A) Data reported by Armesto et al.7 (open circles) and Storkey et al.9 (square). The solid line corresponds to the fit proposed by Armesto et al. with eqn (5) and k(Met + HOCl) = 8.7 × 108 M–1 s–1.7 (B) Data reported by Armesto et al. (open circles) and re-evaluated apparent constant at pH 7.4 determined in this work (black circle). The solid line corresponds to the fit to eqn (9), which yielded k(Met + HOCl) = (5.5 ± 0.8) × 108 M–1 s–1 and k(Met + ClO–) = 700 ± 500 M–1 s–1.
