1. Departments of Chemistry and of Molecular and Cell Biology, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, W. M. Keck Center for Molecular Electronics, Syracuse University, 111 College Place, Syracuse, New York 13244, Department of Molecular Biology and Biochemistry, University of California, Irvine, California 92697, Department of Physiology and Biophysics, University of California, Irvine, California 92697, and Department of Microbiology and Molecular Genetics and...