1. Laboratory for Structural Biology of Infection and Inflammation, University of Hamburg, c/o DESY, Build. 22a, Notkestrasse 85, 22607 Hamburg, Germany
2. H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi-75270, Pakistan
3. Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704 Poznan, Poland