About the Authors

Ellen R. Edenberg

Contributed equally to this work with: Ellen R. Edenberg, Kevin G. Mark

Affiliation Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, California, United States of America

Kevin G. Mark

Contributed equally to this work with: Ellen R. Edenberg, Kevin G. Mark

Affiliation Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, California, United States of America

David P. Toczyski

toczyski@cc.ucsf.edu

Affiliation Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: ERE KGM DPT. Performed the experiments: ERE KGM. Analyzed the data: ERE DPT. Wrote the paper: ERE DPT.