About the Authors

Stephanie Johnson

Contributed equally to this work with: Stephanie Johnson, Yi-Ju Chen

Affiliations Department of Biochemistry and Molecular Biophysics, California Institute of Technology, Pasadena, California, United States of America, Department of Biochemistry and Biophysics, University of California San Francisco, San Francisco, California, United States of America

Yi-Ju Chen

Contributed equally to this work with: Stephanie Johnson, Yi-Ju Chen

Affiliation Department of Physics, California Institute of Technology, Pasadena, California, United States of America

Rob Phillips

phillips@pboc.caltech.edu

Affiliation Departments of Applied Physics and Biology, California Institute of Technology, Pasadena, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SJ YJC RP. Performed the experiments: SJ YJC. Analyzed the data: SJ YJC. Contributed reagents/materials/analysis tools: SJ YJC. Wrote the paper: SJ YJC RP.