Files in this Data Supplement:

• Supplemental file 1 - Fig. S1 (Localization of telomeric transgene integration in four stable cell clones)
  MS PowerPoint file, 188 K.
• Supplemental file 2 - Fig. S2 (DsRed and GFP expression patterns for monoclonal populations selected from stable transfections)
  MS PowerPoint file, 1.2 MB.
• Supplemental file 3 - Fig. S3 (Nontargeted transgene integration in clones generated without telomeric repeats)
  MS PowerPoint file, 160 K.
• Supplemental file 4 - Fig. S4 (Boundary activity of Gal-Pro at telomeric loci)
  MS PowerPoint file, 273 K.
• Supplemental file 5 - Fig. S5 (CTF1 H3-interacting domain deletion and telomeric boundary activity)
  MS PowerPoint file, 291 K.
• Supplemental file 6 - Fig. S6 (CTF1 H3-interacting domain point mutations and boundary activity)
  MS PowerPoint file, 295 K.
• Supplemental file 7 - Fig. S7 (Telomeric position effects are relieved by histone deacetylation inhibitors)
  MS PowerPoint file, 132 K.