1. Department
of Chemistry, Department of Molecular Biosciences, Chemistry of Life
Processes Institute, and Center for Molecular Innovation and Drug
Discovery, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
2. Departments
of Molecular Biology and Biochemistry, Chemistry, and Pharmaceutical
Sciences, University of California, Irvine, California 92697-3900, United States