Assays

Cells were incubated with 500 µM Biotin-Phenol during the last 30 min of LLOMe or GPN treatment and subsequently pulsed by addition of H2O2 for 1 min at room temperature. To stop the biotinylation reaction, they were washed 3x with quencher solution (10 mM sodium azide, 10 mM sodium ascorbate, 5 mM Trolox in DPBS) and 3x with PBS. All further steps were performed at 4°C unless indicated otherwise. After cell harvest with 0.25% Trypsin/EDTA (ThermoFisher Scientific), cells were counted and heavy- ...