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Figure S4. BimS localizes to mitochondrial membranes. Mitochondria (m) from T-REx-HeLa cells (3C4 clone) uninduced or tet-induced as indicated were isolated and separated alongside the soluble cytosolic fractions (c) on 12.5% SDS-PAA gels. CoxIV is a marker for mitochondria, caspase-8 for cytosolic proteins.