1. Department of Biological Sciences, University of Illinois at Chicago , Chicago , IL 60607, USA
2. Department of Chemistry and Institute of Functional Genomics, Lomonosov Moscow State University , Moscow 119992, Russia
3. Peter the Great St.Petersburg Polytechnic University , Saint Petersburg 195251, Russia
4. Department of Pharmaceutical Sciences, University of Illinois at Chicago , Chicago , IL 60607, USA
5. Center for Biomolecular Sciences, University of Illinois at Chicago , Chicago , IL 60607, USA
6. Department of Microbiology and Immunology, University of Texas Medical Branch , Galveston , TX 77555, USA
7. Department of Biochemistry and Molecular Biology, University of Texas Medical Branch , Galveston , TX 77555, USA
8. Sealy Center for Structural Biology and Molecular Biophysics, University of Texas Medical Branch , Galveston , TX 77555, USA
9. Institute for Human Infections and Immunity, University of Texas Medical Branch , Galveston , TX 77555, USA