Figure 5.
dPRX1/Jafrac1 behaves like a classic 2-cys peroxiredoxin. Drosophila PRX1/Jafrac1 was expressed, purified and H2O2-treated as in (Peskin et al., 2013) with the following modifications: 50 mM TCEP was used for the initial reduction step prior to desalting, 5 μM recombinant protein was used in a total volume of 50 μL for each concentration, and the incubation time with H2O2 prior to catalase (marked with an asterisk on the SDS-PAGE) addition and NEM treatment was 15 minutes. PRX identity and oxidation state was confirmed by mass spectrometry, antibody activity against the over-oxidized recombinant protein was confirmed by immunopreciptation/mass spectrometry. Marker used: MagicMark XP (Life Technologies).