1. Institute of Biochemistry and Biotechnology, Martin-Luther-University, Halle-Wittenberg, Kurt-Mothes-Strasse 3, 06120 Halle/Saale, Germany
2. Department of Structure and Biophysical Chemistry, Novo Nordisk, 2760 Måløv, Denmark
3. Department of Pharmaceutical Chemistry and Bioanalytics, Institute of Pharmacy, Martin-Luther-University, Halle-Wittenberg, Wolfgang-Langenbeck-Strasse 4, 06120 Halle/Saale, Germany
4. Albrecht-von-Haller-Institute and Göttingen Center for Molecular Biosciences, Georg-August-University Göttingen, Ernst-Caspari-Haus, Justus-von-Liebig-Weg 11, 37077 Göttingen, Germany