1. Department of Chemistry, Institute of Pharmacy and Molecular Biotechnology; and Department of Infectious Diseases–Medical Microbiology and Hygiene; Heidelberg University, 69117 Heidelberg, Germany
2. Institute of Pharmacy and Biochemistry, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
3. Department of Microbiology and Immunology, Department of Biochemistry and Molecular Biology, and Institute for Structural Biology and Drug Discovery, Virginia Commonwealth University, Richmond, VA 23284
4. Institute for Chemistry and Biochemistry, Free University Berlin, 14195 Berlin, Germany
5. Institute of Biochemistry, University of Bayreuth, 95440 Bayreuth, Germany
6. Architecture et Réactivité de l’ARN, Institut de Biologie Moléculaire et Cellulaire du Centre National de la Recherche Scientifique, Université de Strasbourg, 67084 Strasbourg, France