About the Authors

Simon Meyer

Affiliation Department of Structural Biology, Max-Planck-Institute of Molecular Physiology, Dortmund, Germany

Sabine Böhme

Affiliation Department of Physics, University of Osnabrück, Osnabrück, Germany

André Krüger

Current address: Center for Cellular Imaging and Nanoanalytics, M.E. Mueller Institute for Structural Biology, Biozentrum, University of Basel, Basel, Switzerland

Affiliation Department of Structural Biology, Max-Planck-Institute of Molecular Physiology, Dortmund, Germany

Heinz-Jürgen Steinhoff

Affiliation Department of Physics, University of Osnabrück, Osnabrück, Germany

Johann P. Klare

jklare@uos.de (JPK); alfred.wittinghofer@mpi-dortmund.mpg.de (AW)

Affiliation Department of Physics, University of Osnabrück, Osnabrück, Germany

Alfred Wittinghofer

jklare@uos.de (JPK); alfred.wittinghofer@mpi-dortmund.mpg.de (AW)

Affiliation Department of Structural Biology, Max-Planck-Institute of Molecular Physiology, Dortmund, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

The author(s) have made the following declarations about their contributions: Conceived and designed the experiments: JPK AW. Performed the experiments: SM SB AK JPK. Analyzed the data: SM SB JPK AW. Contributed reagents/materials/analysis tools: HJS. Wrote the paper: SM SB HJS JPK AW. Performed the protein preparations and biochemical experiments, performed the crystallization experiments, X-ray data analysis, and solving of the X-ray structures: SM. Performed and analyzed the EPR experiments: SB JPK. Designed the mutants: SM AK JPK. Provided the EPR equipment: H-JS. Performed the protein preparations and biochemical experiments: AK.