Update to: Nature Genetics https://doi.org/10.1038/ng.767. Published online 13 February 2011.

In the version of this article initially published, there was an inadvertent duplication and inversion in one of the control blots for β-actin, which caused an error in the data shown in Supplementary Figure 9a. This error had no effect on any conclusions or experimental data originally published. The authors have now provided the correct data scan for these blots, which were generated at the time of data preparation (Fig. 1). An updated version of the Supplementary Information that includes the correct Supplementary Figure 9 is attached to this notice.

A comparison between the originally published Supplementary Figure 9a (left) and the updated image that uses the correct data scan for the β-actin control blots (right).

Supplementary information is available in the online version of this amendment.