Affiliation: | (1) Department of Biochemistry and Molecular Biology, Department of Chemistry, Biotechnology Laboratory, and the Protein Engineering Network of Centres of Excellence, University of British Columbia, Vancouver, BC, Canada, V6T1Z3;(2) Division of Molecular and Structural Biology, Ontario Cancer Institute, and Department of Medical Biophysics, University of Toronto, 610 University Avenue, Toronto, ON, Canada, M5G2M9 |