1. Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195, Berlin, Germany
2. Department of Physics, St. Petersburg State University, Ulianovskaja 3, 198504 St. Petersburg, Russia
3. Departments of Pharmacology and Therapeutics, and Biochemistry and Molecular Biology, College of Medicine, University of Florida, Gainesville, Florida 32610, United States