1. Institute of Clinical Biochemistry, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany
2. Institute for Biophysical Chemistry/Research Division for Structural Biochemistry, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany
3. Department of Chemistry, Technische Universität Dresden, Bergstrasse 66, 01069 Dresden, Germany