1. A. B. Hancock Jr. Memorial Laboratory for Cancer
Research, Departments
of Biochemistry, ‡Chemistry, and §Pharmacology, ∥Mass Spectrometry Research Center, ⊥Center in Molecular Toxicology, #Center for Structural Biology, ∇Department of Medicine,
Vanderbilt Institute of Chemical Biology, and Vanderbilt-Ingram Cancer
Center, Vanderbilt University School of Medicine, Nashville, Tennessee 37232-0146, United States