Files in this Data Supplement:

• Supplemental file 1 - Supplemental Fig. S1 (Cell cycle analysis of MCF-7 cells irradiated with 20 Gy, kinase assay of CDK-2 activity, and cell cycle analysis of BJ cells released 12, 16, or 20 h from serum starvation), S2 (Immunoblot detection of Cdc6 in MCF-7 cells irradiated with 20 Gy), S3 (Quantification analysis of Cdc6 protein stability), and S4 (Cell cycle analysis of MCF-7 cells transfected with a control and Cdh1kd construct, immunoblot analysis of CDK2 with cyclin E antibody, quantification of wild-type, S54D, and S74D Cdc6 protein levels after IR treatment, and whole-cell lysates of MCF-7 cells immunoblotted for Cdc6).
  Zipped PowerPoint presentation, 368K.
• Supplemental file 2 - Legends to supplemental figures
  MS Word document, 21K.