(A) Bioenergetic profile of human fibroblast cell lines. OCR (pmol/min/norm.unit) for cWT, cWT+ATAD1, PEX3-/-, PEX3-/-+ATAD1, cWT-ATAD1-/-, and PEX3-/- atad1-/- cells plotted against time (XF96e Extracellular Flux Analyzer, Mito-Stress-Test). 1 μM Oligomycin A, 0.15 μM FCCP, and 1 μM rotenone + 1 μM antimycin A (final concentrations) were sequentially delivered to the XF96e assay medium through injection ports in the sensor cartridge. The graph is the compilation of two independent assays, error bars show mean +/- s.d. (n=4, biological replicates). 