About the Authors

Nicholas M. Levinson


Affiliation Department of Chemistry, Stanford University, Stanford, California, United States of America

Steven G. Boxer

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: NML SGB. Performed the experiments: NML. Analyzed the data: NML. Contributed reagents/materials/analysis tools: NML. Wrote the paper: NML.