1. Department of Chemistry, Department of Biochemistry, Molecular Biology, and Cell Biology, and Center for Drug Discovery and Chemical Biology, Northwestern University, Evanston, Illinois 60208-3113, Departments of Molecular Biology and Biochemistry, Pharmaceutical Chemistry, and Chemistry, University of California, Irvine, California 92697-3900, Department of Biochemistry, The University of Texas Health Science Center, San Antonio, Texas 78384-7760, and Department of Pediatrics, First Faculty of Medicine,...