Files in this Data Supplement:

• Supplemental file 1 - Supplemental materials and methods, Table S1 (S. pombe strains used in this study), and legends to Fig. S1 to S6.
  MS Word document, 88K.
• Supplemental file 2 - Fig. S1 (Structure and amino acid sequences of HP1 family proteins).
  Zipped PDF file, 67K.
• Supplemental file 3 - Fig. S2 (Analysis of Swi6 dimerization states by analytical ultracentrifugation).
  Zipped PDF file, 595K.
• Supplemental file 4 - Fig. S3 (Intermolecular associations between Swi6 and Chp2).
  Zipped PDF file, 44K.
• Supplemental file 5 - Fig. S4 (Acetylation of H3K14 is dependent on Clr4).
  Zipped PDF file, 41K.
• Supplemental file 6 - Fig. S5 (Chp2 and Swi6 binding at euchromatic regions).
  Zipped PDF file, 96K.
• Supplemental file 7 - Fig. S6 (Swi6 or Chp2 overproduction causes cellular growth defects).
  Zipped PDF file, 80K.