| Affiliation: | 1. Protein Structure Section, Macromolecular Crystallography Laboratory, National Cancer Institute-Frederick, Frederick, MD 21702-1201, USA;2. Molecular Targets Laboratory, Center for Cancer Research, National Cancer Institute-Frederick, Frederick, MD 21702-1201, USA;3. SAIC-Frederick Inc., National Cancer Institute, Frederick, MD 21702-1201, USA;4. Synchrotron Radiation Research Section, Macromolecular Crystallography Laboratory, National Cancer Institute, Argonne National Laboratory, Argonne, IL 60439, USA |
