1. Department of Chemistry, Department of Molecular Biosciences, Center for Molecular Innovation and Drug Discovery, and Chemistry of Life Processes Institute, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States
2. Departments of Molecular Biology and Biochemistry, Pharmaceutical Chemistry, 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 and Center for Applied Genomics, First School of Medicine, Charles University, Prague, Czech Republic