About the Authors

Elena Gustchina, John M. Louis, G. Marius Clore
Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America

Mi Li, Alla Gustchina, Alexander Wlodawer
Protein Structure Section, Macromolecular Crystallography Laboratory, National Cancer Institute, Frederick, Maryland, United States of America

Mi Li
Basic Research Program, SAIC-Frederick, Frederick, Maryland, United States of America

D. Eric Anderson, John Lloyd
Proteomics and Mass Spectrometry Facility, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America

Christian Frisch
AbD Serotec, MorphoSys AG, Martinsried, Germany

Carole A. Bewley
Laboratory of Biorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland, United States of America

Corresponding Authors

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JML CAB AG AW GMC. Performed the experiments: EG ML JML DEA JL. Analyzed the data: EG ML JML DEA JL AG AW GMC. Contributed reagents/materials/analysis tools: CF. Wrote the paper: EG CAB AG AW GMC.