1. Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, 1 Pasteur Street, 02-093 Warsaw, Poland
2. European Molecular Biology Laboratory, Hamburg Outstation, c/o DESY, Hamburg 22607, Germany
3. Division of Biophysics, Institute of Experimental Physics, Faculty of Physics, University of Warsaw, Warsaw 02-093, Poland
4. Department of Chemistry, University of Antwerp, 2020 Antwerp, Belgium
5. Department of Chemistry, University of Illinois at Chicago, Chicago 60607-7061, United States