Files in this Data Supplement:

• Supplemental file 1 - Legends to Fig. S1 to S5.
  MS Word document, 33K.
• Supplemental file 2 - Fig. S1 (Accumulation kinetics).
  Zipped EPS file, 237K.
• Supplemental file 3 - Fig. S2 (Integrity of GFP-tagged BRCA1 subfragments used).
  Zipped EPS file, 2.2MB.
• Supplemental file 4 - Fig. S3 (N-terminal BRCA1 targeting at DSBs).
  Zipped EPS file, 183K.
• Supplemental file 5 - Fig. S4 (Ku80-dependent accumulation of N-terminal BRCA1 at DSB).
  Zipped EPS file, 7MB.
• Supplemental file 6 - Fig. S5 (Expression of wild-type and mutant BRCA1).
  Zipped EPS file, 296K.