Affiliation: | 1. Howard Hughes Medical Institute, Cornell University, Ithaca, NY 14853, USA;2. Physics Department & LASSP, Cornell University, Ithaca, NY 14853, USA;3. Department of Chemistry, Cornell University, Ithaca, NY 14853, USA;4. Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA;5. Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI 02903, USA |