About the Authors

Elisabeth L Humphris

Affiliations Graduate Group in Biophysics, University of California San Francisco, San Francisco, California, United States of America , California Institute for Quantitative Biosciences, University of California San Francisco, San Francisco, California, United States of America

Tanja Kortemme

To whom correspondence should be addressed. E-mail: kortemme@cgl.ucsf.edu

Affiliations Graduate Group in Biophysics, University of California San Francisco, San Francisco, California, United States of America , California Institute for Quantitative Biosciences, University of California San Francisco, San Francisco, California, United States of America , Department of Biopharmaceutical Sciences, University of California San Francisco, San Francisco, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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