1. Institute of Chemistry - Physical Chemistry, Martin-Luther-University Halle-Wittenberg, Von-Danckelmann-Platz
4, 06120 Halle, Germany
2. Institute of Microbiology, Leibniz University Hannover, Schneiderberg 50, 30167 Hannover, Germany
3. Max Planck Research Unit for Enzymology of Protein Folding, Weinbergweg 22, 06120 Halle, Germany