1. Department of Chemistry, ‡Department of Molecular and Experimental
Medicine, §Department of Integrative
Structural and Computational Biology, ∥Department of Chemical Physiology, ⊥Department of Molecular
and Cellular Neuroscience, #The Skaggs Institute for Chemical Biology, ∇Dorris Neuroscience Center, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, United States