1. Institute of Biochemistry, Heinrich Heine University Düsseldorf, Universitätsstrabe 1, 40225 Düsseldorf, Germany
2. Biological and Medical Research Center, Heinrich Heine University Düsseldorf, Universitätsstrabe 1, 40225 Düsseldorf, Germany
3. Department of Molecular Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, Zernike Institute for Advanced Materials and the Kluyver Centre for the Genomics of Industrial Microorganisms, University of Groningen, Nijenborgh 7, 9747 AG Groningen, The Netherlands