1. Biophysics of Tropical Diseases Max Planck Tandem Group, University of Antioquia, Medellín, Colombia
2. Department of Theoretical Biophysics, Max Planck Institute of Biophysics, 60438 Frankfurt am Main, Germany
3. Institute of Biophysics, Goethe University Frankfurt, 60438 Frankfurt am Main, Germany
4. Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-0520, USA