1. Department of Chemistry, University of Tennessee, Knoxville, Tennessee37996, United States
2. Department of Biochemistry, Cellular, and Molecular Biology, University of Tennessee, Knoxville, Tennessee37996, United States
3. Department of Surgery, Graduate School of Medicine, University of Tennessee, Knoxville, Tennessee37996, United States
4. Laboratory of Islet Biology and Inflammation, Pennington Biomedical Research Center, Baton Rouge, Louisiana70808, United States