1. Institute of Biophysics and Physical Biochemistry, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
2. Institute of Biochemistry, Genetics and Microbiology, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany
3. IBG-1: Biotechnology, Institute of Bio- and Geosciences, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
4. Institute of Functional Genomics, University of Regensburg, Universitätsstrasse 31, D-93053 Regensburg, Germany