About the Authors

Alexander F. Kintzer

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

Harry J. Sterling

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

Iok I. Tang

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

Evan R. Williams

Affiliations Department of Chemistry, University of California, Berkeley, California, United States of America, California Institute for Quantitative Biomedical Research (QB3), University of California, Berkeley, California, United States of America

Bryan A. Krantz

bakrantz@berkeley.edu

Affiliations Department of Chemistry, University of California, Berkeley, California, United States of America, California Institute for Quantitative Biomedical Research (QB3), University of California, Berkeley, California, United States of America, Department of Molecular and Cell Biology, University of California, Berkeley, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AFK HJS BK. Performed the experiments: AFK HJS IIT. Analyzed the data: AFK HJS IIT BK. Contributed reagents/materials/analysis tools: AFK HJS ERW BK. Wrote the paper: AFK HJS ERW BK.