1. Structural Genomics Consortium (N.S., L.S., C.H.A., A.M.E., H.-W.P.), University of Toronto, Toronto, Ontario, Canada M5G 1L7;
2. Department of Pharmacology and Toxicology (N.S., H.-W.P.), University of Toronto, Toronto, Ontario, Canada M5S 1A8
3. Institute of Bioorganic Chemistry National Academy of Sciences of Belarus (A.A.G., S.A.U.), Minsk 220141, Belarus;University of Toronto, Toronto, Ontario, Canada M5S 1A8