1. Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Ul. Miklukho-Maklaya, 16/10, 117997 Moscow, Russia
2. Department of Biology, Lomonosov Moscow State University, Leninskie Gory, 1, 119234 Moscow, Russia
3. Belozersky Institute of Physical-Chemical Biology, Lomonosov Moscow State University, 119991 Moscow, Russia
4. Department of Physiology and Biophysics, University of California, Irvine, CA 92697, USA