About the Authors

Sebastián Bernales, Peter Walter
Howard Hughes Medical Institute, University of California San Francisco, San Francisco, California, United States of America

Sebastián Bernales, Peter Walter
Department of Biochemistry and Biophysics, School of Medicine, University of California San Francisco, San Francisco, California, United States of America

Kent L McDonald
Electron Microscope Laboratory, University of California Berkeley, California, United States of America

Corresponding Author

Sebastian.Bernales@ucsf.edu

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

SB and PW conceived and designed the experiments. SB and KLM performed the experiments. SB and PW analyzed the data. SB and KLM contributed reagents/materials/analysis tools. SB and PW wrote the paper.