1. Department of Pharmacology, SUNY Upstate Medical University, Syracuse, New York
13210, United States
2. Department
of Life Sciences
and Systems Biology, University of Torino, via Accademia Albertina 13, 10123 Torino, Italy
3. Department of Structural Biology, Hauptman-Woodward Medical Research Institute, Buffalo
14203-1102, New York, United States