Affiliation: | 1. Department of Biochemistry, Molecular Biology and Biophysics, Biotechnology Institute, University of Minnesota, 1479 Gortner Avenue, Saint Paul, MN, 55108 (USA), Fax: (+1)?612‐625‐5780;2. Department of Chemistry, McGill University, Montréal, Québec, H3A 2K6 (Canada);3. National Research Council Biotechnology Research Institute, 6100 Royalmount Avenue, Montréal, Québec, H4P 2R2 (Canada), Fax: (+1)?514‐496‐5143 |