1. Department of Developmental Biochemistry, University of Goettingen, Justus-von-Liebig-Weg 11, 37077 Goettingen, Germany
2. Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Inhoffenstrasse 7B, 38124 Braunschweig, Germany
3. Genevention GmbH, Rudolf-Wissel-Str. 28, 37079 Goettingen, Germany