1. Michael Smith Laboratories, University of British Columbia, Vancouver, British Columbia, Canada
2. Department of Chemistry, University of British Columbia, Vancouver, British Columbia, Canada
3. Centre for Structural and Functional Genomics, Concordia University, Montreal, Quebec, Canada
4. Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, British Columbia, Canada
5. Department of Botany, University of British Columbia, Vancouver, British Columbia, Canada