1. Chemical Biology Group
2. Stratingh Institute for Chemistry
3. University of Groningen
4. Groningen
5. The Netherlands
6. Biological Chemistry Group
7. Institute of Biology Leiden
8. Leiden University
9. Leiden
10. Department of Biology I, Microbiology
11. Ludwig-Maximilians-Universität München Planegg/Martinsried
12. Germany