1. The Protein Engineering Network of Centres of Excellence, PENCE Inc., National Business Centre, 750 Heritage Medical Research Centre, Edmonton, Alberta, Canada T6G 2S2
2. Department of Microbiology and Immunology, University of British Columbia, 300-6174 University Boulevard, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
3. The Biotechnology Laboratory, 237-6174 University Boulevard, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3