The antibodies used in Western blot were pThr58-Myc (Santa Cruz
Biotechnology, Dallas, Texas, sc-135647), pS62-Myc (Abcam), ERCC3 (A301-337A,
Bethyl Laboratories, Montgomery, TX); antibodies to MYC (#5605),
Rpb1-CTD (#2629), pSer2-CTD of Rpb1 (#8798), pSer2-CTD of Rpb1
(#8807), β-actin (#4967) and α-tubulin
(#2125) were purchased from Cell Signaling Technology, Danvers, MA.
Triptolide was purchased from Cayman Chemical (Ann Arbor, MI) and dissolved in
DMSO as 1 mM stock. Chemotherapy drugs were purchased from the Fox Chase Cancer
Center pharmacy.
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