1. Department of Chemistry; University of Graz; Heinrichstrasse 28 8010 Graz Austria
2. Department Experimental Biology; Faculty of Science; Masaryk University; Kamenice 5A13 625 00 Brno Czech Republic
3. Biomolecular Sciences and Biotechnology Institute; University of Groningen; Nijenborgh 4 9747 AG Groningen NL