Immunoblotting was performed as described [74 (link), 75 (link)]. The antibodies used were anti-Flag (Sigma-Aldrich), polyclonal anti-YOD1 (Proteintech, Rosemont, IL), monoclonal and polyclonal anti-p53 (Cell Signaling Technology, Beverly, MA and Santa Cruz Biotechnology respectively), anti-Myc, anti-PUMA, anti-BAX, and anti-MDM2 antibodies (Santa Cruz Biotechnology), anti-K48 ubiquitin and β-actin (Cell Signaling Technology), anti-HA (Abcam), and horseradish peroxidase-conjugated secondary antibodies (Cell Signaling Technology).
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