1. Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS, Université de Montpellier I and Université de Montpellier II, 15, Av. Ch. Flahault, F-34093 Montpellier Cedex 05, France, Neuroscience Research Program, JLC-Biomedical Biotechnology Research Institute, North Carolina Central University, 700 George Street, Durham, North Carolina 27707, and Department of Chemistry, Division of Biochemistry, North Carolina Central University, Durham, North Carolina 27707