293T cells were treated with DMSO, 200 µM H2O2, 10 mM NAC, or 200 µM H2O2 plus 10 mM NAC for 2 h. Cells were then harvested and used for mitochondrial isolation. Purified mitochondria were treated with DMSO or EDC (20 mM) for 30 min at 37 ℃, and then were analyzed by Western blotting with the indicated antibodies. Quantification of the relative protein level of ATAD3 oligomers to HSP60 described in (F). Data are presented as mean ± SD (n = 3 independent experiments), statistical significance was assessed by a one-way ANOVA, N.S., not significant, *p < 0.05. 