1. Department of Physical Biochemistry Max Planck Institute for Biophysical Chemistry Göttingen Germany
2. Gene Center Department for Biochemistry and Center for integrated Protein Science Munich (CiPSM) University of Munich Munich Germany
3. Institute for Biochemistry and Molecular Biology University of Hamburg Hamburg Germany
4. Department of Molecular Biology and Genetics Johns Hopkins University School of Medicine Baltimore MD USA
5. Howard Hughes Medical Institute Johns Hopkins University School of Medicine Baltimore MD USA