1. Institute of Biophysics and Physical Biochemistry, Regensburg Center for Biochemistry, University of Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
2. Institute of Organic Chemistry, University of Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany
3. Institute of Biochemistry, Genetics and Microbiology, University of Regensburg, Universitätsstrasse 31, 93053 Regensburg, Germany