1. Austrian Centre of Industrial Biotechnology, c/o Department of Chemistry, Organic & Bioorganic Chemistry; University of Graz; Heinrichstrasse 28 8010 Graz Austria
2. Department of Chemistry, Organic & Bioorganic Chemistry; University of Graz; Heinrichstrasse 28 8010 Graz Austria
3. Institute of Molecular Biosciences; University of Graz; Humboldtstrasse 50 8010 Graz Austria