About the Authors

Jolene S Fernandes

Affiliations Division of Biology, California Institute of Technology, Pasadena, California, United States of America , Howard Hughes Medical Institute, California Institute of Technology, Pasadena, California, United States of America

Paul W Sternberg

To whom correspondence should be addressed. E-mail: pws@caltech.edu

Affiliations Division of Biology, California Institute of Technology, Pasadena, California, United States of America , Howard Hughes Medical Institute, California Institute of Technology, Pasadena, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

JSF and PWS conceived and designed the experiments, analyzed the data, and wrote the paper. JSF performed the experiments.