1. Institute of Organic and Macromolecular ChemistryHeinrich‐Heine‐University Duesseldorf Universitaetsstrasse 1 40225 Duesseldorf Germany
2. Interfaculty Institute of BiochemistryUniversity of Tuebingen Hoppe‐Seyler‐Strasse 4 72076 Tuebingen Germany
3. Institute of Inorganic and Structural ChemistryHeinrich‐Heine‐University Duesseldorf Universitaetsstrasse 1 40225 Duesseldorf Germany
4. Max Planck Institute of Colloids and Interfaces Am Muehlenberg 1 14476 Potsdam Germany
5. Vanderbilt University School of Medicine Nashville Tennessee 37232 USA