(A) 293 cells with GFP or Skp2 knockdown were treated with or without IR (10 Gy) and harvested for coimmmunoprecipitation assay 5 min after IR treatment.
(B) Skp2–/– MEFs restored with mock, Skp2, and Skp2-NES were treated with IR (3 Gy) and harvested for IF analysis 5 min after IR treatment.
(C) Skp2–/– MEFs restored with mock, Skp2, and Skp2-NES were treated with IR (3 Gy) and harvested for western blot analysis 5 min after IR treatment.