1. Institute of Organic Chemistry, University of Freiburg, 79104 Freiburg, Germany
2. Institute of Biochemistry and Molecular Biology, Faculty of Medicine, University of Freiburg, 79104 Freiburg, Germany
3. Faculty of Biology, University of Freiburg, 79104 Freiburg, Germany
4. Institute of Pharmaceutical Biology and Biotechnology, University of Freiburg, 79104 Freiburg, Germany
5. CIBSS, Centre for Integrative Biological Signaling Studies, University of Freiburg, 79104 Freiburg, Germany