1. Department of Bioengineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
2. Institut de Pharmacologie et Biologie Structurale, CNRS, Université de Toulouse, 205 Route de Narbonne, 31400 Toulouse, France
3. Departments of Biological Sciences and Chemistry, Lehigh University, Bethlehem, Pennsylvania 18015, United States