1. Department Chemie, Center for Integrated Protein Science (CIPSM), Technische Universität München; Garching Germany
2. Department Chemie, Institute for Advanced Study (IAS), Technische Universität München; Garching Germany
3. Chemistry Department, Faculty of Science, King Abdulaziz University; Jeddah Saudi Arabia
4. Department of Biological Sciences, Border Biomedical Research Center, University of Texas; El Paso TX USA