1. Department of Microbial Drugs, Helmholtz Centre for Infection Research; and German Centre for Infection Research (DZIF), Partner Site Hannover/Braunschweig, Inhoffenstrasse 7, 38124 Braunschweig, Germany
2. Department of Chemical Microbiology, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany
3. Department of Biochemistry, Faculty of Sciences, Egerton University, P.O. Box 536, 20115, Njoro, Kenya
4. Mycothéque de l’ Universite Catholique de Louvain (BCCM/MUCL), Place Croix du Sud 3, B-1348 Louvain-la-Neuve, Belgium
5. Department of Chemistry, Faculty of Sciences, Egerton University, P.O. Box 536, 20115, Njoro, Kenya