1. Contributions from the Departments of Biochemistry and Microbiology, The University of British Columbia, 300-6174 University Boulevard, Vancouver, B.C., V6T 1Z3, Canada; Department of Chemistry, The University of British Columbia, E257-2036 Main Mall, Vancouver, B.C., V6T 1Z1, Canada; Biotechnology Laboratory, The University of British Columbia, 237-6174 University Boulevard, Vancouver, B.C., V6T 1Z3, Canada; Department of Chemistry, Princeton University, Princeton, New Jersey 08544; Department of...