1. Department of Chemistry, The University of Kansas, Lawrence, Kansas 66045, Department of Chemistry, University of California, Berkeley, California 94720, Department of Chemistry and Biochemistry, Montana State University, Bozeman, Montana 59717, Astbury Centre for Structural Molecular Biology, School of Biochemistry and Molecular Biology, University of Leeds, Leeds LS2 9JT, United Kingdom, and Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, Minnesota...