Affiliation: | 1. Center for Biomolecular Structure and Organization, Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA;2. Basic Science Program, Frederick National Laboratory for Cancer Research, Frederick, MD 21702, USA;3. Institute for Bioscience and Biotechnology Research, National Institute of Standards and Technology and University of Maryland, Rockville, MD 20850, USA;4. RNA Biology Laboratory, National Cancer Institute, Frederick, MD 21702, USA |