1. Fachbereich Chemie, Universität Dortmund, 44221 Dortmund, Germany, Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, 2300 RA Leiden, The Netherlands, Institut für Chemie, Freie Universität Berlin, 14195 Berlin, Germany, J. Heyrovsky Institute of Physical Chemistry, Academy of Sciences of the Czech Republic, 18223 Prague, Czech Republic, Institute of Biophysics, Academy of Sciences of the Czech Republic, 61265 Brno, Czech Republic, and National Center for Biomolecular Research,...