1. Applied Microbiology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
2. Department of Chemistry, Duke University, Durham, North Carolina, USA
3. Department of Biochemistry, Duke University School of Medicine, Durham, North Carolina, USA
4. Microbial Biology, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany