About the Authors

Robert Pejchal

Affiliation Department of Biological Chemistry, University of Michigan, Ann Arbor, Michigan, United States of America

Martha L Ludwig

To whom correspondence should be addressed. E-mail: mlludwig@umich.edu

Affiliations Department of Biological Chemistry, University of Michigan, Ann Arbor, Michigan, United States of America, Biophysics Research Division, University of Michigan, Ann Arbor, Michigan, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

RP and MLL conceived and designed the experiments. RP performed the experiments. RP analyzed the data. RP contributed reagents/materials/analysis tools. RP and MLL wrote the paper.