1. Institute
of Pharmaceutical Biology and Biotechnology, Heinrich-Heine University, Universitaetsstrasse 1, 40225 Duesseldorf, Germany
2. Key
Laboratory of Marine Drugs, The Ministry of Education of China, School
of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People’s Republic of China
3. Helmholtz Centre for Infection Research, Inhoffenstraße 7, D-38124 Braunschweig, Germany
4. Microbial
Chemistry Department, Genetic Engineering and Biotechnology Division, National Research Center, El-Behoos Street 33, Dokki-Giza 12622, Egypt