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. 2009 Jun 27;284(35):23364–23374. doi: 10.1074/jbc.M109.021394

FIGURE 4.

FIGURE 4.

Identifying glutathionylated Srx as the reaction intermediate. Glutathionylated Prx I (C83S/C173S) mutant was incubated with Srx at 37 °C for 1 h in 50 mm Tris (pH 7.4) buffer, and the resulting mixture was subjected to LC-MS analysis. The extracted ion chromatogram shows each peak corresponding to each of the four different proteins: reduced Prx I (C83S/C173S), glutathionylated Prx I (C83S/C173S), reduced Srx, and glutathionylated Srx.