1. Department
of Microbial Natural Products, Helmholtz-Institute for Pharmaceutical
Research Saarland (HIPS), Helmholtz Centre for Infection Research
(HZI) and Pharmaceutical Biotechnology, Saarland University, Campus C2 3, 66123 Saarbrücken, Germany
2. German Center for Infection Research (DZIF), Partner site Hannover-Braunschweig 38124 Hannover-Braunschweig, Germany