1. Department for Cellular Biophysics, Max Planck Institute for Medical Research, Jahnstraße 29, 69120 Heidelberg, Germany
2. Institute for Physical Chemistry, Department for Biophysical Chemistry, University of Heidelberg, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany
3. Department of Neurobiology, Interdisciplinary Center for Neurosciences, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany