1. Department of Chemistry, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada.
2. Department of Biology, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada.
3. Centre for Research on Biomolecular Interactions, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada.