Institution: | (1) Departments of Chemistry, Biological Sciences, Biophysical Sciences and Center for Structural Biology, State University of New York at Buffalo, 815 Natural Sciences Complex, Buffalo, NY, 14260-3000, U.S.A;(2) The Johnson Research Foundation, Department of Biochemistry and Biophysics, University of Pennsylvania, Philadelphia, PA, 19104-6089, U.S.A |