1. Department of Biophysical Chemistry, J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, 182 23 Prague, Czech Republic
2. Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, CZ-12840 Prague, Czech Republic
3. Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Science, Moscow GSP-7, Russia