AUTHOR CORRECTION
Volume 81, no. 9, p. 3239–3252, 2013. Page 3246: In Fig. 4B, the CyaA-MavU fusion Western blots were inadvertently duplicated during assembly of the final figure, and the blots for the CyaA-DHFR-MavU fusion were not shown. Figure 4B should appear as shown below, with the proper blots directed against the CyaA-DHFR-MavU fusion displayed.

