Correction to: Oncogene (2008) 27, 4557–4568; doi:10.1038/onc.2008.90; published online 14 April 2008 Since the publication of the above paper, the authors found inadvertent errors and mislabelings in Figures 1d, g, 4a and 5c. The correct version of the figures is given here. The correction does notaffect the validity of our data and does not limit the conclusions drawn in the paper.