1. Department of Molecular Pharmacology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105, Department of Chemistry and Biochemistry, University of Mississippi, University, Mississippi 38677, Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105, Department of Chemistry and Biochemistry, Central Connecticut State University, New Britain, Connecticut 06050, and Department of Chemical Biology and Therapeutics, St. Jude Children's Research Hospital,...