1. Pharmaceutical Biology, Pharmacy Department, Ludwig-Maximilians University of Munich, Butenandtstraße 5-13, 81377 Munich, Germany
2. Institute of Organic Chemistry and Center of Molecular Biosciences, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
3. Institute of Microbiology, University of Innsbruck, Technikerstr. 25, 6020 Innsbruck, Austria