Affiliation: | *Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD;†Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD;§Institute of Pharmacology, Charles University, First Faculty of Medicine Prague, Czech Republic |