About the Authors

Bryan K. Clarkson

Affiliation Department of Molecular and Cell Biology, University of California, Berkeley, California, United States of America

Wendy V. Gilbert

Current address: Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America

Affiliation Department of Molecular and Cell Biology, University of California, Berkeley, California, United States of America

Jennifer A. Doudna

doudna@berkeley.edu

Affiliations Howard Hughes Medical Institute, University of California, Berkeley, California, United States of America, Department of Molecular and Cell Biology, University of California, Berkeley, California, United States of America, Department of Chemistry, University of California, Berkeley, California, United States of America, Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BKC WVG JD. Performed the experiments: BKC. Analyzed the data: BKC. Wrote the paper: BKC WVG JD.