AUTHOR CORRECTION
Volume 31, no. 9, p. 1870–1884, 2011, https://doi.org/10.1128/MCB.01393-10. Page 1875, Fig. 2A, row 3: The second image is incorrect. The corrected image should appear as shown below. We regret the error. This change does not affect the interpretation of the data and conclusions of the study.