Affiliation: | 1. Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA;2. Masonic Cancer Center, University of Minnesota, Minneapolis, MN 55455, USA;3. Institute for Molecular Virology, University of Minnesota, Minneapolis, MN 55455, USA;4. Department of Chemistry and Biochemistry, University of San Diego, La Jolla 92093, CA, USA;5. Howard Hughes Medical Institute, University of Minnesota, Minneapolis, MN 55455, USA |