| Institution: | 1. Laboratory of Molecular Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA;2. Laboratory of Biochemistry and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA;3. Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA 94158, USA;4. The Howard Hughes Medical Institute, University of California, San Francisco, San Francisco, CA 94158, USA |
