1. Department
of Chemistry, Department of Molecular Biosciences, Chemistry
of Life Processes Institute, Center for Molecular Innovation and Drug
Discovery, Northwestern University, Evanston, Illinois 60208-3113, United States
2. Departments
of Molecular Biology and Biochemistry, Pharmaceutical Sciences, and
Chemistry, University of California, Irvine, California 92697-3900, United States
3. Department
of Biochemistry, The University of Texas Health Science Center, San Antonio, Texas 78384-7760, United States
4. Department
of Pediatrics, First Faculty of Medicine, Charles University, Prague, Czech Republic