1. Institute for Biophysical Chemistry, OE4350, Hannover Medical School, Hannover, Germany
2. Division for Structural Biochemistry, OE8830, Hannover Medical School, Hannover, Germany
3. Cell Adhesion Laboratory, Department of Integrative Structural and Computational Biology, The Scripps Research Institute, Jupiter, United States
4. Laboratory of Molecular Physiology, NHLBI, National Institutes of Health, Bethesda, United States
5. Centre for Structural Systems Biology (CSSB), German Electron Synchrotron (DESY), Hamburg, Germany