293T cells transiently transfected with control or ATAD3B-Flag were treated with or without 200 µM H2O2 for 2 h. Cell lysates were then immunoprecipitated with Dynabeads Protein G pre-coupled with anti-Flag antibody, followed by Western blotting with anti-Flag or anti-LC3B antibodies. Relative protein levels of LC3B and ATAD3B-Flag were further evaluated by densitometry 