1. Program in Metabolic Biology, Department
of Nutritional Sciences and Toxicology, University of California, Berkeley, 127 Morgan Hall, Berkeley, California 94720, United States
2. Department of Chemical Physiology, The Scripps Research Institute, 10550 North Torrey Pines Rd. SR107, La Jolla, California 92037, United States
3. Department
of Chemistry, University of Virginia, McCormick Road,
P.O. Box 400319, Charlottesville, Virginia 22904-4319, United States
4. University of California, San Francisco Helen Diller Family Comprehensive Cancer Center, Box 0128, San Francisco, California 94143, United States