1. Department of Chemical Biology; Helmholtz Centre for Infection Research and German Centre for Infection Research (DZIF); Inhoffenstrasse 7 38124 Braunschweig Germany
2. State Key Laboratory of Bioactive Substances and Function of Natural Medicine; Institute of Materia Medica; Chinese Academy of Medical Sciences and Peking Union Medical College; 1 Xiannongtan Street 100050 P.R. China
3. School of Engineering and Science; Jacobs University Bremen; Germany