1. Department of New Materials and Biosystems Max Planck Institute for intelligent Systems Heisenbergstr. 3 70569 Stuttgart Germany
2. Department of Biophysical Chemistry University of Heidelberg 69120 Heidelberg Germany
3. Institute for Advanced Study and Center for Integrated Protein Science Department Chemie Technische Universität München Lichtenbergstr. 4 85747 Garching Germany
4. CSF Biomaterials and Cellular Biophysics Max Planck Institute for Intelligent Systems Heisenbergstr. 3 70569 Stuttgart Germany
5. Chemistry Department Faculty of Science King Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia