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. Author manuscript; available in PMC: 2010 Apr 29.
Published in final edited form as: Free Radic Biol Med. 2008 Jan 18;44(8):1570–1577. doi: 10.1016/j.freeradbiomed.2008.01.003

Fig. 1.

Fig. 1

Effect of Trp on H2O2 consumption by MPO. A typical recording by an H2O2-selective electrode demonstrating the autoreduction of H2O2 (20 μM) following addition to a stirred 0.2 M phosphate buffer (pH 7.0), at 25 °C (dashed line). Addition of MPO (20 nM) to H2O2 solution in the absence (dotted line) and the presence of 15, 30 and 100 μM of Trp (solid lines bottom to the top) caused decrease in the rate of H2O2 consumption. Tracings shown are from a typical experiment performed at least three times.