MICROBIOLOGY Correction for “Structural bases for F plasmid conjugation and F pilus biogenesis in Escherichia coli,” by Bo Hu, Pratick Khara, and Peter J. Christie, which was first published June 25, 2019; 10.1073/pnas.1904428116 (Proc. Natl. Acad. Sci. U.S.A. 116, 14222–14227).
The authors note that the following statement should be added to the Acknowledgments: “We thank Dr. Rachel Bosserman for the image of the cell in SI Appendix, Fig. S2A that was generated by transmission electron microscopy.”