Correction to: Nature https://doi.org/10.1038/nature07217, published online 17 August 2008.
In Figs. 2e, f and 3d of this Letter, the cells in the representative images expressed mCherry–Atb2 (tubulin), whereas the cells used in the corresponding quantification graphs did not express mCherry–Atb2. The corrected graphs representing data obtained by using cells expressing mCherry–Atb2 are shown in Fig. 1 to this Amendment. In Fig. 4a of this Letter, the western blot panel representing HP1α was improperly processed; the correct blot is shown in Fig. 2 to this Amendment. See Supplementary Information to this Amendment for the corrected Source Data for Figs. 2e, f and 3d and the uncropped blot for HP1α in the original Fig. 4a. These changes do not affect the conclusions of the original Letter, which has not been corrected online. We apologize for any confusion that these errors may have caused.
Supplementary Information is available in the online version of this Amendment.