ERRATUM
Volume 34, no. 12, p. 2208–2220, 2014, https://doi.org/10.1128/MCB.01656-13. Page 2216, : The first image in the second row was inadvertently duplicated and displayed in the second panel in the second row during figure assembly. The corrected second panel in the second row is shown below. The conclusion remains unchanged by this correction. We apologize for any confusion that this error might have caused.