1. Department
of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, California 92037, United States
2. Department
of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
3. Department
of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, United States
4. The
Skaggs Institute for Chemical Biology, The Scripps Research Institute, La
Jolla, California 92037, United States