About the Authors

Peter M Kasson

To whom correspondence should be addressed. E-mail: kasson@stanford.edu (PMK); pande@stanford.edu (VSP)

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

Vijay S Pande

To whom correspondence should be addressed. E-mail: kasson@stanford.edu (PMK); pande@stanford.edu (VSP)

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

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

PMK and VSP conceived and designed the experiments, contributed reagents/materials/analysis tools, and wrote the paper. PMK performed the experiments and analyzed the data.