1. Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, Indiana 46285, United States
2. Structural Genomics Consortium, University of Toronto, Toronto, ON M5G 1L7, Canada
3. Department of Medical Biophysics, University of Toronto and Princess Margaret Cancer Centre, 101 College Street, MaRS South Tower, Suite 707, Toronto, ON M5G 1L7, Canada
4. Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON M5S 1A8, Canada
5. Institute of Molecular and Cell Biology, Singapore 138673