About the Authors

Daniel A Kraut

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

Paul A Sigala

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

Brandon Pybus

Affiliation Department of Biochemistry, Brandeis University, Waltham, Massachusetts, United States of America

Corey W Liu

Affiliation Stanford Magnetic Resonance Laboratory, Stanford University, Stanford, California, United States of America

Dagmar Ringe

Affiliation Department of Biochemistry, Brandeis University, Waltham, Massachusetts, United States of America

Gregory A Petsko

Affiliation Department of Biochemistry, Brandeis University, Waltham, Massachusetts, United States of America

Daniel Herschlag

To whom correspondence should be addressed. E-mail: herschla@stanford.edu

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

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

DAK, PAS, and DH conceived and designed the experiments, BP performed X-ray crystallography experiments, PAS performed 1D 1H and 19F NMR experiments, PAS and CWL performed 2D NOESY NMR experiments, DAK carried out assay development and performed binding assays and ITC experiments. DAK, PAS, BP, CWL, DR, GAP, and DH analyzed the data. DAK, PAS, BP, CWL, DR, GAP, and DH wrote the paper.