Genes & Development 24: 159–170 (2010)
Due to an error during figure preparation for the above-mentioned article, one of the images in Figure 2A was accidentally used such that the two top panels, showing negative controls represented as “Mock” (for αFlag), were duplicated. A corrected version of the two panels is shown below, where “IP:αFlag” remains as originally presented and “Input” is replaced by the correct, nonduplicated image. This correction does not alter the conclusions of the study. The authors apologize for the error.