About the Authors

Elliott W. Abrams

Current address: University of Pennsylvania, Department of Cell and Developmental Biology, Philadelphia, Pennsylvania, United States of America

Affiliation Department of Cell Biology, the Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America

Yim Ling Cheng

Affiliation Department of Cell Biology, the Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America

Deborah J. Andrew

dandrew@jhmi.edu

Affiliation Department of Cell Biology, the Johns Hopkins University School of Medicine, Baltimore, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: EWA DJA. Performed the experiments: EWA YLC. Analyzed the data: EWA YLC DJA. Contributed reagents/materials/analysis tools: EWA. Wrote the manuscript: EWA YLC DJA.