AUTHOR CORRECTION
Volume 31, no. 4, p. 639–651, 2011, https://doi.org/10.1128/MCB.00919-10. Page 649, Fig. 8A: When the original paper was prepared, lanes 1 to 3 of the 18S panel of Fig. 7A were accidently reused as lanes 1 to 3 of the Fig. 8A 18S panel. The correct 18S panel should appear as shown below. We apologize to the readers. The change does not affect the interpretation of any of the experiments described in the paper.