Fig. 1.

EPR analysis of the formation and decay of the intermediate formed by reaction of di-ferric MauG with a stoichiometric amount of H₂O₂. After mixing EPR spectra were recorded at time intervals of 0 (a), 0.03 (b), 2 (c), 8 (d), and 20 (e) minutes. Each sample contained 200 μM MauG. EPR parameters were temperature 10 K, microwave power 1 mW, modulation amplitude 5 G, time constant 40.96 ms, and sweep time 83.89 s. Each spectrum is the average of five scans.