1. Michael Smith Laboratories, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
2. BioProducts Institute, University of British Columbia, 2385 East Mall, Vancouver, BC, V6T 1Z4, Canada
3. Department of Biochemistry and Molecular Biology, University of British Columbia, 2350 Health Sciences Mall, Vancouver, BC, V6T 1Z3, Canada
4. Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
5. Department of Botany, University of British Columbia, 3200 University Blvd, Vancouver, BC, V6T 1Z4, Canada