1. Department of Molecular Physiology and Biophysics (J.E.A., D.P.B., F.D.J., D.H.W.), Vanderbilt University School of Medicine, Nashville, Tennessee 37232
2. Metabolic Signaling and Disease Program (J.E.A., M.A.B.), Sanford-Burnham Medical Research Institute at Lake Nona, Orlando, Florida 32827
3. Department of Medicine (D.J.D.), The Banting and Best Diabetes Centre, Samuel Lunenfeld Research Institute, Mt. Sinai Hospital, Toronto, Ontario, Canada M5G 1X5