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. Author manuscript; available in PMC: 2011 Apr 28.

Published in final edited form as: J Am Chem Soc. 2010 Apr 28;132(16):5711–5724. doi: 10.1021/ja9082182

Plots of the log(k_cat) (closed circles, bottom) and the log(k_cat/K_m) (open circles, top) for the chlorite decomposition reaction as a function of pH. Data are fit to model 1 (black line) and model 2 with pK_a(1) and pK_a(4) fixed (red line). Dashed vertical lines show the locations of the three optically observed pH transitions at pH 4.8, 8.7, and 10.3, from Figures 2 and 3.